diff --git a/specification/cognitiveservices/data-plane/Face/v1.0/Face.json b/specification/cognitiveservices/data-plane/Face/v1.0/Face.json
index de17b1c3a3a7..8fac8087d9fc 100644
--- a/specification/cognitiveservices/data-plane/Face/v1.0/Face.json
+++ b/specification/cognitiveservices/data-plane/Face/v1.0/Face.json
@@ -2645,7 +2645,8 @@
    "x-ms-parameter-location": "method",
    "description": "An image stream.",
    "schema": {
-    "type": "file"
+    "type": "object",
+    "format": "file"
    }
   },
   "ImageUrl": {