diff --git a/specification/synapse/data-plane/Microsoft.Synapse/preview/2019-11-01-preview/sparkJob.json b/specification/synapse/data-plane/Microsoft.Synapse/preview/2019-11-01-preview/sparkJob.json
index 7986fa04d60c..65a0e90df464 100644
--- a/specification/synapse/data-plane/Microsoft.Synapse/preview/2019-11-01-preview/sparkJob.json
+++ b/specification/synapse/data-plane/Microsoft.Synapse/preview/2019-11-01-preview/sparkJob.json
@@ -1486,7 +1486,7 @@
       "description": "Valid api-version for the request.",
       "required": true,
       "type": "string",
-      "default": "2019-11-01-preview",
+      "x-ms-client-default": "2019-11-01-preview",
       "x-ms-skip-url-encoding": true,
       "x-ms-parameter-location": "client"
     },
diff --git a/specification/synapse/data-plane/Microsoft.Synapse/stable/2020-12-01/sparkJob.json b/specification/synapse/data-plane/Microsoft.Synapse/stable/2020-12-01/sparkJob.json
index ec76548d115e..03b8e07a411a 100644
--- a/specification/synapse/data-plane/Microsoft.Synapse/stable/2020-12-01/sparkJob.json
+++ b/specification/synapse/data-plane/Microsoft.Synapse/stable/2020-12-01/sparkJob.json
@@ -1558,7 +1558,7 @@
       "description": "Valid api-version for the request.",
       "required": true,
       "type": "string",
-      "default": "2019-11-01-preview",
+      "x-ms-client-default": "2019-11-01-preview",
       "x-ms-skip-url-encoding": true,
       "x-ms-parameter-location": "client"
     },