1 files changed, 2 insertions, 2 deletions
diff --git a/js/src/jsapi.cpp b/js/src/jsapi.cpp
index f4b3c9854..3901a0e63 100644
--- a/js/src/jsapi.cpp
+++ b/js/src/jsapi.cpp
@@ -2947,9 +2947,9 @@ JS_AlreadyHasOwnPropertyById(JSContext* cx, HandleObject obj, HandleId id, bool*
         return js::HasOwnProperty(cx, obj, id, foundp);
 
     RootedNativeObject nativeObj(cx, &obj->as<NativeObject>());
-    RootedShape prop(cx);
+    Rooted<PropertyResult> prop(cx);
     NativeLookupOwnPropertyNoResolve(cx, nativeObj, id, &prop);
-    *foundp = !!prop;
+    *foundp = prop.isFound();
     return true;
 }