diff --git a/scripts-available/CDB_Helper.sql b/scripts-available/CDB_Helper.sql
index 55f5f19..f582308 100644
--- a/scripts-available/CDB_Helper.sql
+++ b/scripts-available/CDB_Helper.sql
@@ -175,4 +175,4 @@ EXCEPTION
     WHEN invalid_schema_name OR undefined_table THEN
         RETURN false;
 END;
-$$ LANGUAGE PLPGSQL VOLATILE PARALLEL SAFE;
+$$ LANGUAGE PLPGSQL VOLATILE PARALLEL UNSAFE;