diff --git a/library/ecp.c b/library/ecp.c
index 6019500..d90609d 100644
--- a/library/ecp.c
+++ b/library/ecp.c
@@ -100,14 +100,14 @@
     defined(MBEDTLS_ECP_DP_SECP192K1_ENABLED) ||   \
     defined(MBEDTLS_ECP_DP_SECP224K1_ENABLED) ||   \
     defined(MBEDTLS_ECP_DP_SECP256K1_ENABLED)
-#define MBEDTLS_ECP_SHORT_WEIERSTRASS
+#define ECP_SHORTWEIERSTRASS
 #endif
 
 #if defined(MBEDTLS_ECP_DP_M221_ENABLED) ||   \
     defined(MBEDTLS_ECP_DP_M255_ENABLED) ||   \
     defined(MBEDTLS_ECP_DP_M383_ENABLED) ||   \
     defined(MBEDTLS_ECP_DP_M511_ENABLED)
-#define MBEDTLS_ECP_MONTGOMERY
+#define ECP_MONTGOMERY
 #endif
 
 /*
@@ -115,9 +115,9 @@
  */
 typedef enum
 {
-    MBEDTLS_ECP_TYPE_NONE = 0,
-    MBEDTLS_ECP_TYPE_SHORT_WEIERSTRASS,    /* y^2 = x^3 + a x + b      */
-    MBEDTLS_ECP_TYPE_MONTGOMERY,           /* y^2 = x^3 + a x^2 + x    */
+    ECP_TYPE_NONE = 0,
+    ECP_TYPE_SHORT_WEIERSTRASS,    /* y^2 = x^3 + a x + b      */
+    ECP_TYPE_MONTGOMERY,           /* y^2 = x^3 + a x^2 + x    */
 } ecp_curve_type;
 
 /*
@@ -267,12 +267,12 @@
 static inline ecp_curve_type ecp_get_type( const mbedtls_ecp_group *grp )
 {
     if( grp->G.X.p == NULL )
-        return( MBEDTLS_ECP_TYPE_NONE );
+        return( ECP_TYPE_NONE );
 
     if( grp->G.Y.p == NULL )
-        return( MBEDTLS_ECP_TYPE_MONTGOMERY );
+        return( ECP_TYPE_MONTGOMERY );
     else
-        return( MBEDTLS_ECP_TYPE_SHORT_WEIERSTRASS );
+        return( ECP_TYPE_SHORT_WEIERSTRASS );
 }
 
 /*
@@ -745,7 +745,7 @@
     while( mbedtls_mpi_cmp_mpi( &N, &grp->P ) >= 0 )        \
         MBEDTLS_MPI_CHK( mbedtls_mpi_sub_abs( &N, &N, &grp->P ) )
 
-#if defined(MBEDTLS_ECP_SHORT_WEIERSTRASS)
+#if defined(ECP_SHORTWEIERSTRASS)
 /*
  * For curves in short Weierstrass form, we do all the internal operations in
  * Jacobian coordinates.
@@ -1080,7 +1080,7 @@
 {
     int ret;
 
-    if( ecp_get_type( grp ) != MBEDTLS_ECP_TYPE_SHORT_WEIERSTRASS )
+    if( ecp_get_type( grp ) != ECP_TYPE_SHORT_WEIERSTRASS )
         return( MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE );
 
     MBEDTLS_MPI_CHK( ecp_add_mixed( grp, R, P, Q ) );
@@ -1101,7 +1101,7 @@
 
     mbedtls_ecp_point_init( &mQ );
 
-    if( ecp_get_type( grp ) != MBEDTLS_ECP_TYPE_SHORT_WEIERSTRASS )
+    if( ecp_get_type( grp ) != ECP_TYPE_SHORT_WEIERSTRASS )
         return( MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE );
 
     /* mQ = - Q */
@@ -1475,9 +1475,9 @@
     return( ret );
 }
 
-#endif /* MBEDTLS_ECP_SHORT_WEIERSTRASS */
+#endif /* ECP_SHORTWEIERSTRASS */
 
-#if defined(MBEDTLS_ECP_MONTGOMERY)
+#if defined(ECP_MONTGOMERY)
 /*
  * For Montgomery curves, we do all the internal arithmetic in projective
  * coordinates. Import/export of points uses only the x coordinates, which is
@@ -1656,7 +1656,7 @@
     return( ret );
 }
 
-#endif /* MBEDTLS_ECP_MONTGOMERY */
+#endif /* ECP_MONTGOMERY */
 
 /*
  * Multiplication R = m * P
@@ -1675,18 +1675,18 @@
         ( ret = mbedtls_ecp_check_pubkey( grp, P ) ) != 0 )
         return( ret );
 
-#if defined(MBEDTLS_ECP_MONTGOMERY)
-    if( ecp_get_type( grp ) == MBEDTLS_ECP_TYPE_MONTGOMERY )
+#if defined(ECP_MONTGOMERY)
+    if( ecp_get_type( grp ) == ECP_TYPE_MONTGOMERY )
         return( ecp_mul_mxz( grp, R, m, P, f_rng, p_rng ) );
 #endif
-#if defined(MBEDTLS_ECP_SHORT_WEIERSTRASS)
-    if( ecp_get_type( grp ) == MBEDTLS_ECP_TYPE_SHORT_WEIERSTRASS )
+#if defined(ECP_SHORTWEIERSTRASS)
+    if( ecp_get_type( grp ) == ECP_TYPE_SHORT_WEIERSTRASS )
         return( ecp_mul_comb( grp, R, m, P, f_rng, p_rng ) );
 #endif
     return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
 }
 
-#if defined(MBEDTLS_ECP_SHORT_WEIERSTRASS)
+#if defined(ECP_SHORTWEIERSTRASS)
 /*
  * Check that an affine point is valid as a public key,
  * short weierstrass curves (SEC1 3.2.3.1)
@@ -1734,10 +1734,10 @@
 
     return( ret );
 }
-#endif /* MBEDTLS_ECP_SHORT_WEIERSTRASS */
+#endif /* ECP_SHORTWEIERSTRASS */
 
 
-#if defined(MBEDTLS_ECP_MONTGOMERY)
+#if defined(ECP_MONTGOMERY)
 /*
  * Check validity of a public key for Montgomery curves with x-only schemes
  */
@@ -1749,7 +1749,7 @@
 
     return( 0 );
 }
-#endif /* MBEDTLS_ECP_MONTGOMERY */
+#endif /* ECP_MONTGOMERY */
 
 /*
  * Check that a point is valid as a public key
@@ -1760,12 +1760,12 @@
     if( mbedtls_mpi_cmp_int( &pt->Z, 1 ) != 0 )
         return( MBEDTLS_ERR_ECP_INVALID_KEY );
 
-#if defined(MBEDTLS_ECP_MONTGOMERY)
-    if( ecp_get_type( grp ) == MBEDTLS_ECP_TYPE_MONTGOMERY )
+#if defined(ECP_MONTGOMERY)
+    if( ecp_get_type( grp ) == ECP_TYPE_MONTGOMERY )
         return( ecp_check_pubkey_mx( grp, pt ) );
 #endif
-#if defined(MBEDTLS_ECP_SHORT_WEIERSTRASS)
-    if( ecp_get_type( grp ) == MBEDTLS_ECP_TYPE_SHORT_WEIERSTRASS )
+#if defined(ECP_SHORTWEIERSTRASS)
+    if( ecp_get_type( grp ) == ECP_TYPE_SHORT_WEIERSTRASS )
         return( ecp_check_pubkey_sw( grp, pt ) );
 #endif
     return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
@@ -1776,8 +1776,8 @@
  */
 int mbedtls_ecp_check_privkey( const mbedtls_ecp_group *grp, const mbedtls_mpi *d )
 {
-#if defined(MBEDTLS_ECP_MONTGOMERY)
-    if( ecp_get_type( grp ) == MBEDTLS_ECP_TYPE_MONTGOMERY )
+#if defined(ECP_MONTGOMERY)
+    if( ecp_get_type( grp ) == ECP_TYPE_MONTGOMERY )
     {
         /* see [M255] page 5 */
         if( mbedtls_mpi_get_bit( d, 0 ) != 0 ||
@@ -1788,9 +1788,9 @@
         else
             return( 0 );
     }
-#endif /* MBEDTLS_ECP_MONTGOMERY */
-#if defined(MBEDTLS_ECP_SHORT_WEIERSTRASS)
-    if( ecp_get_type( grp ) == MBEDTLS_ECP_TYPE_SHORT_WEIERSTRASS )
+#endif /* ECP_MONTGOMERY */
+#if defined(ECP_SHORTWEIERSTRASS)
+    if( ecp_get_type( grp ) == ECP_TYPE_SHORT_WEIERSTRASS )
     {
         /* see SEC1 3.2 */
         if( mbedtls_mpi_cmp_int( d, 1 ) < 0 ||
@@ -1799,7 +1799,7 @@
         else
             return( 0 );
     }
-#endif /* MBEDTLS_ECP_SHORT_WEIERSTRASS */
+#endif /* ECP_SHORTWEIERSTRASS */
 
     return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
 }
@@ -1814,8 +1814,8 @@
     int ret;
     size_t n_size = ( grp->nbits + 7 ) / 8;
 
-#if defined(MBEDTLS_ECP_MONTGOMERY)
-    if( ecp_get_type( grp ) == MBEDTLS_ECP_TYPE_MONTGOMERY )
+#if defined(ECP_MONTGOMERY)
+    if( ecp_get_type( grp ) == ECP_TYPE_MONTGOMERY )
     {
         /* [M225] page 5 */
         size_t b;
@@ -1835,9 +1835,9 @@
         MBEDTLS_MPI_CHK( mbedtls_mpi_set_bit( d, 2, 0 ) );
     }
     else
-#endif /* MBEDTLS_ECP_MONTGOMERY */
-#if defined(MBEDTLS_ECP_SHORT_WEIERSTRASS)
-    if( ecp_get_type( grp ) == MBEDTLS_ECP_TYPE_SHORT_WEIERSTRASS )
+#endif /* ECP_MONTGOMERY */
+#if defined(ECP_SHORTWEIERSTRASS)
+    if( ecp_get_type( grp ) == ECP_TYPE_SHORT_WEIERSTRASS )
     {
         /* SEC1 3.2.1: Generate d such that 1 <= n < N */
         int count = 0;
@@ -1872,7 +1872,7 @@
                mbedtls_mpi_cmp_mpi( d, &grp->N ) >= 0 );
     }
     else
-#endif /* MBEDTLS_ECP_SHORT_WEIERSTRASS */
+#endif /* ECP_SHORTWEIERSTRASS */
         return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
 
 cleanup:
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 8cce276..3dccb43 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -1208,7 +1208,7 @@
 #if defined(MBEDTLS_ARC4_C) || defined(MBEDTLS_CIPHER_NULL_CIPHER) ||     \
     ( defined(MBEDTLS_CIPHER_MODE_CBC) &&                                  \
       ( defined(MBEDTLS_AES_C) || defined(MBEDTLS_CAMELLIA_C) ) )
-#define MBEDTLS_SOME_MODES_USE_MAC
+#define SSL_SOME_MODES_USE_MAC
 #endif
 
 /*
@@ -1235,7 +1235,7 @@
     /*
      * Add MAC before if needed
      */
-#if defined(MBEDTLS_SOME_MODES_USE_MAC)
+#if defined(SSL_SOME_MODES_USE_MAC)
     if( mode == MBEDTLS_MODE_STREAM ||
         ( mode == MBEDTLS_MODE_CBC
 #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
@@ -1538,14 +1538,14 @@
     return( 0 );
 }
 
-#define MBEDTLS_SSL_MAX_MAC_SIZE   48
+#define SSL_MAX_MAC_SIZE   48
 
 static int ssl_decrypt_buf( mbedtls_ssl_context *ssl )
 {
     size_t i;
     mbedtls_cipher_mode_t mode;
     int auth_done = 0;
-#if defined(MBEDTLS_SOME_MODES_USE_MAC)
+#if defined(SSL_SOME_MODES_USE_MAC)
     size_t padlen = 0, correct = 1;
 #endif
 
@@ -1707,7 +1707,7 @@
 #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
         if( ssl->session_in->encrypt_then_mac == MBEDTLS_SSL_ETM_ENABLED )
         {
-            unsigned char computed_mac[MBEDTLS_SSL_MAX_MAC_SIZE];
+            unsigned char computed_mac[SSL_MAX_MAC_SIZE];
             unsigned char pseudo_hdr[13];
 
             MBEDTLS_SSL_DEBUG_MSG( 3, ( "using encrypt then mac" ) );
@@ -1891,10 +1891,10 @@
      * Authenticate if not done yet.
      * Compute the MAC regardless of the padding result (RFC4346, CBCTIME).
      */
-#if defined(MBEDTLS_SOME_MODES_USE_MAC)
+#if defined(SSL_SOME_MODES_USE_MAC)
     if( auth_done == 0 )
     {
-        unsigned char tmp[MBEDTLS_SSL_MAX_MAC_SIZE];
+        unsigned char tmp[SSL_MAX_MAC_SIZE];
 
         ssl->in_msglen -= ssl->transform_in->maclen;
 
@@ -1976,7 +1976,7 @@
         if( correct == 0 )
             return( MBEDTLS_ERR_SSL_INVALID_MAC );
     }
-#endif /* MBEDTLS_SOME_MODES_USE_MAC */
+#endif /* SSL_SOME_MODES_USE_MAC */
 
     /* Make extra sure authentication was performed, exactly once */
     if( auth_done != 1 )
diff --git a/library/timing.c b/library/timing.c
index 33f5239..d9fb894 100644
--- a/library/timing.c
+++ b/library/timing.c
@@ -62,10 +62,10 @@
 
 #endif /* _WIN32 && !EFIX64 && !EFI32 */
 
-#if !defined(MBEDTLS_HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) &&  \
+#if !defined(HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) &&  \
     ( defined(_MSC_VER) && defined(_M_IX86) ) || defined(__WATCOMC__)
 
-#define MBEDTLS_HAVE_HARDCLOCK
+#define HAVE_HARDCLOCK
 
 unsigned long mbedtls_timing_hardclock( void )
 {
@@ -74,15 +74,15 @@
     __asm   mov  [tsc], eax
     return( tsc );
 }
-#endif /* !MBEDTLS_HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
+#endif /* !HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
           ( _MSC_VER && _M_IX86 ) || __WATCOMC__ */
 
 /* some versions of mingw-64 have 32-bit longs even on x84_64 */
-#if !defined(MBEDTLS_HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) &&  \
+#if !defined(HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) &&  \
     defined(__GNUC__) && ( defined(__i386__) || (                       \
     ( defined(__amd64__) || defined( __x86_64__) ) && __SIZEOF_LONG__ == 4 ) )
 
-#define MBEDTLS_HAVE_HARDCLOCK
+#define HAVE_HARDCLOCK
 
 unsigned long mbedtls_timing_hardclock( void )
 {
@@ -90,13 +90,13 @@
     asm volatile( "rdtsc" : "=a" (lo), "=d" (hi) );
     return( lo );
 }
-#endif /* !MBEDTLS_HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
+#endif /* !HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
           __GNUC__ && __i386__ */
 
-#if !defined(MBEDTLS_HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) &&  \
+#if !defined(HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) &&  \
     defined(__GNUC__) && ( defined(__amd64__) || defined(__x86_64__) )
 
-#define MBEDTLS_HAVE_HARDCLOCK
+#define HAVE_HARDCLOCK
 
 unsigned long mbedtls_timing_hardclock( void )
 {
@@ -104,13 +104,13 @@
     asm volatile( "rdtsc" : "=a" (lo), "=d" (hi) );
     return( lo | ( hi << 32 ) );
 }
-#endif /* !MBEDTLS_HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
+#endif /* !HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
           __GNUC__ && ( __amd64__ || __x86_64__ ) */
 
-#if !defined(MBEDTLS_HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) &&  \
+#if !defined(HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) &&  \
     defined(__GNUC__) && ( defined(__powerpc__) || defined(__ppc__) )
 
-#define MBEDTLS_HAVE_HARDCLOCK
+#define HAVE_HARDCLOCK
 
 unsigned long mbedtls_timing_hardclock( void )
 {
@@ -126,16 +126,16 @@
 
     return( tbl );
 }
-#endif /* !MBEDTLS_HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
+#endif /* !HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
           __GNUC__ && ( __powerpc__ || __ppc__ ) */
 
-#if !defined(MBEDTLS_HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) &&  \
+#if !defined(HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) &&  \
     defined(__GNUC__) && defined(__sparc64__)
 
 #if defined(__OpenBSD__)
 #warning OpenBSD does not allow access to tick register using software version instead
 #else
-#define MBEDTLS_HAVE_HARDCLOCK
+#define HAVE_HARDCLOCK
 
 unsigned long mbedtls_timing_hardclock( void )
 {
@@ -144,13 +144,13 @@
     return( tick );
 }
 #endif /* __OpenBSD__ */
-#endif /* !MBEDTLS_HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
+#endif /* !HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
           __GNUC__ && __sparc64__ */
 
-#if !defined(MBEDTLS_HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) &&  \
+#if !defined(HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) &&  \
     defined(__GNUC__) && defined(__sparc__) && !defined(__sparc64__)
 
-#define MBEDTLS_HAVE_HARDCLOCK
+#define HAVE_HARDCLOCK
 
 unsigned long mbedtls_timing_hardclock( void )
 {
@@ -159,13 +159,13 @@
     asm volatile( "mov   %%g1, %0" : "=r" (tick) );
     return( tick );
 }
-#endif /* !MBEDTLS_HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
+#endif /* !HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
           __GNUC__ && __sparc__ && !__sparc64__ */
 
-#if !defined(MBEDTLS_HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) &&      \
+#if !defined(HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) &&      \
     defined(__GNUC__) && defined(__alpha__)
 
-#define MBEDTLS_HAVE_HARDCLOCK
+#define HAVE_HARDCLOCK
 
 unsigned long mbedtls_timing_hardclock( void )
 {
@@ -173,13 +173,13 @@
     asm volatile( "rpcc %0" : "=r" (cc) );
     return( cc & 0xFFFFFFFF );
 }
-#endif /* !MBEDTLS_HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
+#endif /* !HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
           __GNUC__ && __alpha__ */
 
-#if !defined(MBEDTLS_HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) &&      \
+#if !defined(HAVE_HARDCLOCK) && defined(MBEDTLS_HAVE_ASM) &&      \
     defined(__GNUC__) && defined(__ia64__)
 
-#define MBEDTLS_HAVE_HARDCLOCK
+#define HAVE_HARDCLOCK
 
 unsigned long mbedtls_timing_hardclock( void )
 {
@@ -187,13 +187,13 @@
     asm volatile( "mov %0 = ar.itc" : "=r" (itc) );
     return( itc );
 }
-#endif /* !MBEDTLS_HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
+#endif /* !HAVE_HARDCLOCK && MBEDTLS_HAVE_ASM &&
           __GNUC__ && __ia64__ */
 
-#if !defined(MBEDTLS_HAVE_HARDCLOCK) && defined(_MSC_VER) && \
+#if !defined(HAVE_HARDCLOCK) && defined(_MSC_VER) && \
     !defined(EFIX64) && !defined(EFI32)
 
-#define MBEDTLS_HAVE_HARDCLOCK
+#define HAVE_HARDCLOCK
 
 unsigned long mbedtls_timing_hardclock( void )
 {
@@ -203,11 +203,11 @@
 
     return( (unsigned long)( offset.QuadPart ) );
 }
-#endif /* !MBEDTLS_HAVE_HARDCLOCK && _MSC_VER && !EFIX64 && !EFI32 */
+#endif /* !HAVE_HARDCLOCK && _MSC_VER && !EFIX64 && !EFI32 */
 
-#if !defined(MBEDTLS_HAVE_HARDCLOCK)
+#if !defined(HAVE_HARDCLOCK)
 
-#define MBEDTLS_HAVE_HARDCLOCK
+#define HAVE_HARDCLOCK
 
 static int hardclock_init = 0;
 static struct timeval tv_init;
@@ -226,7 +226,7 @@
     return( ( tv_cur.tv_sec  - tv_init.tv_sec  ) * 1000000
           + ( tv_cur.tv_usec - tv_init.tv_usec ) );
 }
-#endif /* !MBEDTLS_HAVE_HARDCLOCK */
+#endif /* !HAVE_HARDCLOCK */
 
 volatile int mbedtls_timing_alarmed = 0;
 
diff --git a/library/x509.c b/library/x509.c
index eb14720..2205400 100644
--- a/library/x509.c
+++ b/library/x509.c
@@ -702,7 +702,7 @@
 #define snprintf compat_snprintf
 #endif /* _MSC_VER && !snprintf && !EFIX64 && !EFI32 */
 
-#define MBEDTLS_ERR_DEBUG_BUF_TOO_SMALL    -2
+#define ERR_BUF_TOO_SMALL    -2
 
 #define SAFE_SNPRINTF()                             \
 {                                                   \
@@ -711,7 +711,7 @@
                                                     \
     if( (unsigned int) ret > n ) {                  \
         p[n - 1] = '\0';                            \
-        return( MBEDTLS_ERR_DEBUG_BUF_TOO_SMALL ); \
+        return( ERR_BUF_TOO_SMALL ); \
     }                                               \
                                                     \
     n -= (unsigned int) ret;                        \
@@ -870,7 +870,7 @@
     int ret;
 
     if( strlen( name ) + sizeof( " key size" ) > size )
-        return( MBEDTLS_ERR_DEBUG_BUF_TOO_SMALL );
+        return( ERR_BUF_TOO_SMALL );
 
     ret = mbedtls_snprintf( p, n, "%s key size", name );
     SAFE_SNPRINTF();
diff --git a/library/x509_crl.c b/library/x509_crl.c
index dd3302b..9e4a9e1 100644
--- a/library/x509_crl.c
+++ b/library/x509_crl.c
@@ -598,7 +598,7 @@
 #define snprintf compat_snprintf
 #endif /* _MSC_VER && !snprintf && !EFIX64 && !EFI32 */
 
-#define MBEDTLS_ERR_DEBUG_BUF_TOO_SMALL    -2
+#define ERR_BUF_TOO_SMALL    -2
 
 #define SAFE_SNPRINTF()                             \
 {                                                   \
@@ -607,7 +607,7 @@
                                                     \
     if( (unsigned int) ret > n ) {                  \
         p[n - 1] = '\0';                            \
-        return( MBEDTLS_ERR_DEBUG_BUF_TOO_SMALL ); \
+        return( ERR_BUF_TOO_SMALL ); \
     }                                               \
                                                     \
     n -= (unsigned int) ret;                        \
diff --git a/library/x509_crt.c b/library/x509_crt.c
index 78dfabb..bc360dc 100644
--- a/library/x509_crt.c
+++ b/library/x509_crt.c
@@ -1108,7 +1108,7 @@
 #define snprintf compat_snprintf
 #endif /* _MSC_VER  && !snprintf && !EFIX64 && !EFI32 */
 
-#define MBEDTLS_ERR_DEBUG_BUF_TOO_SMALL    -2
+#define ERR_BUF_TOO_SMALL    -2
 
 #define SAFE_SNPRINTF()                             \
 {                                                   \
@@ -1117,7 +1117,7 @@
                                                     \
     if( (unsigned int) ret > n ) {                  \
         p[n - 1] = '\0';                            \
-        return( MBEDTLS_ERR_DEBUG_BUF_TOO_SMALL ); \
+        return( ERR_BUF_TOO_SMALL ); \
     }                                               \
                                                     \
     n -= (unsigned int) ret;                        \
@@ -1139,7 +1139,7 @@
         if( cur->buf.len + sep_len >= n )
         {
             *p = '\0';
-            return( MBEDTLS_ERR_DEBUG_BUF_TOO_SMALL );
+            return( ERR_BUF_TOO_SMALL );
         }
 
         n -= cur->buf.len + sep_len;
diff --git a/library/x509_csr.c b/library/x509_csr.c
index 2e5aa3c..f6afa1e 100644
--- a/library/x509_csr.c
+++ b/library/x509_csr.c
@@ -358,7 +358,7 @@
 #define snprintf compat_snprintf
 #endif /* _MSC_VER && !snprintf && !EFIX64 && !EFI32 */
 
-#define MBEDTLS_ERR_DEBUG_BUF_TOO_SMALL    -2
+#define ERR_BUF_TOO_SMALL    -2
 
 #define SAFE_SNPRINTF()                             \
 {                                                   \
@@ -367,7 +367,7 @@
                                                     \
     if( (unsigned int) ret > n ) {                  \
         p[n - 1] = '\0';                            \
-        return( MBEDTLS_ERR_DEBUG_BUF_TOO_SMALL ); \
+        return( ERR_BUF_TOO_SMALL ); \
     }                                               \
                                                     \
     n -= (unsigned int) ret;                        \