diff --git a/tests/suites/test_suite_ssl.function b/tests/suites/test_suite_ssl.function
index 4635b65f7..1d6370205 100644
--- a/tests/suites/test_suite_ssl.function
+++ b/tests/suites/test_suite_ssl.function
@@ -3592,6 +3592,8 @@ void ssl_decrypt_non_etm_cbc( int cipher_type, int hash_id, int trunc_hmac,
                                    MBEDTLS_SSL_MINOR_VERSION_3,
                                    0 , 0 );
 
+    TEST_ASSERT( ret == 0 );
+
     /* Determine padding/plaintext length */
     TEST_ASSERT( length_selector >= -2 && length_selector <= 255 );
     block_size = t0.ivlen;