diff --git a/library/ssl_srv.c b/library/ssl_srv.c
index 88afc84..0ef3423 100644
--- a/library/ssl_srv.c
+++ b/library/ssl_srv.c
@@ -2373,7 +2373,7 @@
         if( ( ret = dhm_calc_secret( &ssl->handshake->dhm_ctx,
                                       ssl->handshake->premaster,
                                      &ssl->handshake->pmslen,
-                                      NULL, NULL ) ) != 0 )
+                                      ssl->f_rng, ssl->p_rng ) ) != 0 )
         {
             SSL_DEBUG_RET( 1, "dhm_calc_secret", ret );
             return( POLARSSL_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_CS );
@@ -2460,7 +2460,7 @@
 
         /* No blinding needed since this is ephemeral DHM */
         if( ( ret = dhm_calc_secret( &ssl->handshake->dhm_ctx,
-                                      p, &n, NULL, NULL ) ) != 0 )
+                                      p, &n, ssl->f_rng, ssl->p_rng ) ) != 0 )
         {
             SSL_DEBUG_RET( 1, "dhm_calc_secret", ret );
             return( POLARSSL_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_CS );