diff --git a/library/dhm.c b/library/dhm.c
index 24c3bf8..28ac310 100644
--- a/library/dhm.c
+++ b/library/dhm.c
@@ -191,10 +191,15 @@
     /*
      * export P, G, GX
      */
-#define DHM_MPI_EXPORT(X,n)                     \
-    MBEDTLS_MPI_CHK( mbedtls_mpi_write_binary( X, p + 2, n ) ); \
-    *p++ = (unsigned char)( n >> 8 );           \
-    *p++ = (unsigned char)( n      ); p += n;
+#define DHM_MPI_EXPORT( X, n )                                          \
+    do {                                                                \
+        MBEDTLS_MPI_CHK( mbedtls_mpi_write_binary( ( X ),               \
+                                                   p + 2,               \
+                                                   ( n ) ) );           \
+        *p++ = (unsigned char)( ( n ) >> 8 );                           \
+        *p++ = (unsigned char)( ( n )      );                           \
+        p += ( n );                                                     \
+    } while( 0 )
 
     n1 = mbedtls_mpi_size( &ctx->P  );
     n2 = mbedtls_mpi_size( &ctx->G  );
@@ -205,7 +210,7 @@
     DHM_MPI_EXPORT( &ctx->G , n2 );
     DHM_MPI_EXPORT( &ctx->GX, n3 );
 
-    *olen  = p - output;
+    *olen = p - output;
 
     ctx->len = n1;
 
@@ -218,6 +223,28 @@
 }
 
 /*
+ * Set prime modulus and generator
+ */
+int mbedtls_dhm_set_group( mbedtls_dhm_context *ctx,
+                           const mbedtls_mpi *P,
+                           const mbedtls_mpi *G )
+{
+    int ret;
+
+    if( ctx == NULL || P == NULL || G == NULL )
+        return( MBEDTLS_ERR_DHM_BAD_INPUT_DATA );
+
+    if( ( ret = mbedtls_mpi_copy( &ctx->P, P ) ) != 0 ||
+        ( ret = mbedtls_mpi_copy( &ctx->G, G ) ) != 0 )
+    {
+        return( MBEDTLS_ERR_DHM_SET_GROUP_FAILED + ret );
+    }
+
+    ctx->len = mbedtls_mpi_size( &ctx->P );
+    return( 0 );
+}
+
+/*
  * Import the peer's public value G^Y
  */
 int mbedtls_dhm_read_public( mbedtls_dhm_context *ctx,
@@ -404,10 +431,11 @@
  */
 void mbedtls_dhm_free( mbedtls_dhm_context *ctx )
 {
-    mbedtls_mpi_free( &ctx->pX); mbedtls_mpi_free( &ctx->Vf ); mbedtls_mpi_free( &ctx->Vi );
-    mbedtls_mpi_free( &ctx->RP ); mbedtls_mpi_free( &ctx->K ); mbedtls_mpi_free( &ctx->GY );
-    mbedtls_mpi_free( &ctx->GX ); mbedtls_mpi_free( &ctx->X ); mbedtls_mpi_free( &ctx->G );
-    mbedtls_mpi_free( &ctx->P );
+    mbedtls_mpi_free( &ctx->pX ); mbedtls_mpi_free( &ctx->Vf );
+    mbedtls_mpi_free( &ctx->Vi ); mbedtls_mpi_free( &ctx->RP );
+    mbedtls_mpi_free( &ctx->K  ); mbedtls_mpi_free( &ctx->GY );
+    mbedtls_mpi_free( &ctx->GX ); mbedtls_mpi_free( &ctx->X  );
+    mbedtls_mpi_free( &ctx->G  ); mbedtls_mpi_free( &ctx->P  );
 
     mbedtls_zeroize( ctx, sizeof( mbedtls_dhm_context ) );
 }
diff --git a/library/error.c b/library/error.c
index 9079c5c..d9c3971 100644
--- a/library/error.c
+++ b/library/error.c
@@ -234,6 +234,8 @@
             mbedtls_snprintf( buf, buflen, "DHM - Allocation of memory failed" );
         if( use_ret == -(MBEDTLS_ERR_DHM_FILE_IO_ERROR) )
             mbedtls_snprintf( buf, buflen, "DHM - Read/write of file failed" );
+        if( use_ret == -(MBEDTLS_ERR_DHM_SET_GROUP_FAILED) )
+            mbedtls_snprintf( buf, buflen, "DHM - Setting the modulus and generator failed" );
 #endif /* MBEDTLS_DHM_C */
 
 #if defined(MBEDTLS_ECP_C)
diff --git a/library/ssl_srv.c b/library/ssl_srv.c
index 002c659..aca4235 100644
--- a/library/ssl_srv.c
+++ b/library/ssl_srv.c
@@ -2945,10 +2945,11 @@
          *     opaque dh_Ys<1..2^16-1>;
          * } ServerDHParams;
          */
-        if( ( ret = mbedtls_mpi_copy( &ssl->handshake->dhm_ctx.P, &ssl->conf->dhm_P ) ) != 0 ||
-            ( ret = mbedtls_mpi_copy( &ssl->handshake->dhm_ctx.G, &ssl->conf->dhm_G ) ) != 0 )
+        if( ( ret = mbedtls_dhm_set_group( &ssl->handshake->dhm_ctx,
+                                           &ssl->conf->dhm_P,
+                                           &ssl->conf->dhm_G ) ) != 0 )
         {
-            MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_mpi_copy", ret );
+            MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_dhm_set_group", ret );
             return( ret );
         }
 
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 9220dd4..617dedb 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -6161,6 +6161,8 @@
 #endif /* MBEDTLS_KEY_EXCHANGE__SOME__PSK_ENABLED */
 
 #if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_SSL_SRV_C)
+
+#if !defined(MBEDTLS_DEPRECATED_REMOVED)
 int mbedtls_ssl_conf_dh_param( mbedtls_ssl_config *conf, const char *dhm_P, const char *dhm_G )
 {
     int ret;
@@ -6175,6 +6177,24 @@
 
     return( 0 );
 }
+#endif /* MBEDTLS_DEPRECATED_REMOVED */
+
+int mbedtls_ssl_conf_dh_param_bin( mbedtls_ssl_config *conf,
+                                   const unsigned char *dhm_P, size_t P_len,
+                                   const unsigned char *dhm_G, size_t G_len )
+{
+    int ret;
+
+    if( ( ret = mbedtls_mpi_read_binary( &conf->dhm_P, dhm_P, P_len ) ) != 0 ||
+        ( ret = mbedtls_mpi_read_binary( &conf->dhm_G, dhm_G, G_len ) ) != 0 )
+    {
+        mbedtls_mpi_free( &conf->dhm_P );
+        mbedtls_mpi_free( &conf->dhm_G );
+        return( ret );
+    }
+
+    return( 0 );
+}
 
 int mbedtls_ssl_conf_dh_param_ctx( mbedtls_ssl_config *conf, mbedtls_dhm_context *dhm_ctx )
 {
@@ -7602,9 +7622,14 @@
 #if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_SSL_SRV_C)
             if( endpoint == MBEDTLS_SSL_IS_SERVER )
             {
-                if( ( ret = mbedtls_ssl_conf_dh_param( conf,
-                                MBEDTLS_DHM_RFC5114_MODP_2048_P,
-                                MBEDTLS_DHM_RFC5114_MODP_2048_G ) ) != 0 )
+                const unsigned char dhm_p[] =
+                    MBEDTLS_DHM_RFC3526_MODP_2048_P_BIN;
+                const unsigned char dhm_g[] =
+                    MBEDTLS_DHM_RFC3526_MODP_2048_G_BIN;
+
+                if ( ( ret = mbedtls_ssl_conf_dh_param_bin( conf,
+                                               dhm_p, sizeof( dhm_p ),
+                                               dhm_g, sizeof( dhm_g ) ) ) != 0 )
                 {
                     return( ret );
                 }