diff --git a/specification/developerhub/resource-manager/Microsoft.DevHub/preview/2022-04-01-preview/workflow.json b/specification/developerhub/resource-manager/Microsoft.DevHub/preview/2022-04-01-preview/workflow.json
index 690499a82580..bad423fcae2a 100644
--- a/specification/developerhub/resource-manager/Microsoft.DevHub/preview/2022-04-01-preview/workflow.json
+++ b/specification/developerhub/resource-manager/Microsoft.DevHub/preview/2022-04-01-preview/workflow.json
@@ -89,10 +89,7 @@
           {
             "name": "parameters",
             "required": false,
-            "in": "body",
-            "schema": {
-              "$ref": "#/definitions/GitHubOAuthCallRequest"
-            }
+            "in": "body"
           }
         ],
         "responses": {