diff --git a/library/ssl_cli.c b/library/ssl_cli.c
index e0c104e..a1d2e19 100644
--- a/library/ssl_cli.c
+++ b/library/ssl_cli.c
@@ -3051,6 +3051,10 @@
 #endif /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
                 return( ret );
             }
+            else
+            {
+                return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+            }
         }
 #if defined(MBEDTLS_SSL__ECP_RESTARTABLE)
         if( ret != MBEDTLS_ERR_ECP_IN_PROGRESS )