diff --git a/client-vendor/after-body/promise-utils/promise-throttler.js b/client-vendor/after-body/promise-utils/promise-throttler.js
index b46ad2145..b19351381 100644
--- a/client-vendor/after-body/promise-utils/promise-throttler.js
+++ b/client-vendor/after-body/promise-utils/promise-throttler.js
@@ -51,6 +51,7 @@
       if (!promise || !(promise instanceof Promise)) {
         throw new Error('Invalid usage of promiseThrottler');
       }
+      return true;
     }
 
     return function() {