diff --git a/specification/cdn/resource-manager/Microsoft.Cdn/stable/2021-06-01/afdx.json b/specification/cdn/resource-manager/Microsoft.Cdn/stable/2021-06-01/afdx.json
index d6b245194899..66e5f076e76b 100644
--- a/specification/cdn/resource-manager/Microsoft.Cdn/stable/2021-06-01/afdx.json
+++ b/specification/cdn/resource-manager/Microsoft.Cdn/stable/2021-06-01/afdx.json
@@ -4435,14 +4435,6 @@
             "name": "EnabledState",
             "modelAsString": true
           }
-        },
-        "originResponseTimeoutSeconds": {
-          "description": "Send and receive timeout on forwarding request to the origin. When timeout is reached, the request fails and returns.",
-          "type": "integer",
-          "format": "int32",
-          "minimum": 16,
-          "maximum": 240,
-          "exclusiveMinimum": false
         }
       }
     },