diff --git a/js/src/jsobj.cpp b/js/src/jsobj.cpp
index 86f868b39c1..05c1463d5c4 100644
--- a/js/src/jsobj.cpp
+++ b/js/src/jsobj.cpp
@@ -4760,7 +4760,7 @@ js_SetPropertyHelper(JSContext *cx, JSObject *obj, jsid id, uintN defineHow,
             }
         }
 
-        sprop = scope->addProperty(cx, id, getter, setter, SPROP_INVALID_SLOT,
+        sprop = scope->putProperty(cx, id, getter, setter, SPROP_INVALID_SLOT,
                                    attrs, flags, shortid);
         if (!sprop) {
             JS_UNLOCK_SCOPE(cx, scope);