diff --git a/js/src/jsapi.cpp b/js/src/jsapi.cpp
index 9b43b453290..e7816d2e52d 100644
--- a/js/src/jsapi.cpp
+++ b/js/src/jsapi.cpp
@@ -2822,7 +2822,7 @@ JS_LookupPropertyWithFlags(JSContext *cx, HandleObject obj, const char *name, un
     RootedObject obj2(cx);
     JSAtom *atom = Atomize(cx, name, strlen(name));
     if (!atom)
-        false;
+        return false;
 
     RootedId id(cx, AtomToId(atom));
     return JS_LookupPropertyWithFlagsById(cx, obj, id, flags, &obj2, vp);