diff --git a/library/pk_wrap.c b/library/pk_wrap.c
index b3db3d7..71b6039 100644
--- a/library/pk_wrap.c
+++ b/library/pk_wrap.c
@@ -215,7 +215,14 @@
                               sig, sig_len );
     if( status != PSA_SUCCESS )
     {
-        ret = mbedtls_psa_err_translate_pk( status );
+        if ( status == PSA_ERROR_INVALID_PADDING )
+        {
+            ret = MBEDTLS_ERR_RSA_INVALID_PADDING;
+        }
+        else
+        {
+            ret = mbedtls_psa_err_translate_pk( status );
+        }
         goto cleanup;
     }
     ret = 0;