diff --git a/library/debug.c b/library/debug.c
index 12559af..3969616 100644
--- a/library/debug.c
+++ b/library/debug.c
@@ -172,7 +172,7 @@
     }
 }
 
-#if defined(MBEDTLS_ECP_C)
+#if defined(MBEDTLS_ECP_LIGHT)
 void mbedtls_debug_print_ecp(const mbedtls_ssl_context *ssl, int level,
                              const char *file, int line,
                              const char *text, const mbedtls_ecp_point *X)
@@ -192,7 +192,7 @@
     mbedtls_snprintf(str, sizeof(str), "%s(Y)", text);
     mbedtls_debug_print_mpi(ssl, level, file, line, str, &X->Y);
 }
-#endif /* MBEDTLS_ECP_C */
+#endif /* MBEDTLS_ECP_LIGHT */
 
 #if defined(MBEDTLS_BIGNUM_C)
 void mbedtls_debug_print_mpi(const mbedtls_ssl_context *ssl, int level,
@@ -273,7 +273,7 @@
         if (items[i].type == MBEDTLS_PK_DEBUG_MPI) {
             mbedtls_debug_print_mpi(ssl, level, file, line, name, items[i].value);
         } else
-#if defined(MBEDTLS_ECP_C)
+#if defined(MBEDTLS_ECP_LIGHT)
         if (items[i].type == MBEDTLS_PK_DEBUG_ECP) {
             mbedtls_debug_print_ecp(ssl, level, file, line, name, items[i].value);
         } else
diff --git a/library/pkwrite.c b/library/pkwrite.c
index f5630f3..3c1a408 100644
--- a/library/pkwrite.c
+++ b/library/pkwrite.c
@@ -517,7 +517,7 @@
         end = PEM_END_PRIVATE_KEY_RSA;
     } else
 #endif
-#if defined(MBEDTLS_ECP_C)
+#if defined(MBEDTLS_ECP_LIGHT)
     if (mbedtls_pk_get_type(key) == MBEDTLS_PK_ECKEY) {
         begin = PEM_BEGIN_PRIVATE_KEY_EC;
         end = PEM_END_PRIVATE_KEY_EC;
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 755a5a7..331bb79 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -1148,7 +1148,7 @@
  * mbedtls_ssl_conf_curves returns void and so can't return
  * any error codes.
  */
-#if defined(MBEDTLS_ECP_C)
+#if defined(MBEDTLS_ECP_LIGHT)
 #if !defined(MBEDTLS_DEPRECATED_REMOVED)
     /* Heap allocate and translate curve_list from internal to IANA group ids */
     if (ssl->conf->curve_list != NULL) {
@@ -1184,7 +1184,7 @@
         ssl->handshake->group_list_heap_allocated = 0;
     }
 #endif /* MBEDTLS_DEPRECATED_REMOVED */
-#endif /* MBEDTLS_ECP_C */
+#endif /* MBEDTLS_ECP_LIGHT */
 
 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED)
 #if !defined(MBEDTLS_DEPRECATED_REMOVED)
@@ -2923,7 +2923,7 @@
 }
 #endif /* MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED */
 
-#if defined(MBEDTLS_ECP_C)
+#if defined(MBEDTLS_ECP_LIGHT)
 #if !defined(MBEDTLS_DEPRECATED_REMOVED)
 /*
  * Set the allowed elliptic curves
@@ -2940,7 +2940,7 @@
     conf->group_list = NULL;
 }
 #endif /* MBEDTLS_DEPRECATED_REMOVED */
-#endif /* MBEDTLS_ECP_C */
+#endif /* MBEDTLS_ECP_LIGHT */
 
 /*
  * Set the allowed groups
@@ -4083,14 +4083,14 @@
         return;
     }
 
-#if defined(MBEDTLS_ECP_C)
+#if defined(MBEDTLS_ECP_LIGHT)
 #if !defined(MBEDTLS_DEPRECATED_REMOVED)
     if (ssl->handshake->group_list_heap_allocated) {
         mbedtls_free((void *) handshake->group_list);
     }
     handshake->group_list = NULL;
 #endif /* MBEDTLS_DEPRECATED_REMOVED */
-#endif /* MBEDTLS_ECP_C */
+#endif /* MBEDTLS_ECP_LIGHT */
 
 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED)
 #if !defined(MBEDTLS_DEPRECATED_REMOVED)
@@ -7377,7 +7377,7 @@
      * Secondary checks: always done, but change 'ret' only if it was 0
      */
 
-#if defined(MBEDTLS_ECP_C)
+#if defined(MBEDTLS_ECP_LIGHT)
     {
         const mbedtls_pk_context *pk = &chain->pk;
 
@@ -7405,7 +7405,7 @@
             }
         }
     }
-#endif /* MBEDTLS_ECP_C */
+#endif /* MBEDTLS_ECP_LIGHT */
 
     if (mbedtls_ssl_check_cert_usage(chain,
                                      ciphersuite_info,