diff --git a/js/src/jsapi-tests/testPromise.cpp b/js/src/jsapi-tests/testPromise.cpp
index 5b49109739f3..0df22f7fc4c7 100644
--- a/js/src/jsapi-tests/testPromise.cpp
+++ b/js/src/jsapi-tests/testPromise.cpp
@@ -5,8 +5,12 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+#include "jsapi.h"
+
 #include "jsapi-tests/tests.h"
 
+using namespace JS;
+
 static bool executor_called = false;
 
 static bool