diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 8364eb8..2ebf128 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -4683,7 +4683,7 @@
 
 #if defined(MBEDTLS_SSL__ECP_RESTARTABLE)
         if( ret == MBEDTLS_ERR_ECP_IN_PROGRESS )
-            return( ret );
+            return( MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS );
 #endif
 
         /*