diff --git a/ibm_catalog.json b/ibm_catalog.json
index fbe1e9cf..105d4d01 100644
--- a/ibm_catalog.json
+++ b/ibm_catalog.json
@@ -189,8 +189,13 @@
               },
               {
                 "key": "mysql_version",
-                "required": true,
+                "required": false,
+                "default_value": "__NULL__",
                 "options": [
+                  {
+                    "displayname": "preferred",
+                    "value": "__NULL__"
+                   },
                   {
                     "displayname": "6.2",
                     "value": "6.2"