diff --git a/lib/sandboxed_renderer/init.js b/lib/sandboxed_renderer/init.js
index 1acd43b3796d7..fe20f45c9e2bf 100644
--- a/lib/sandboxed_renderer/init.js
+++ b/lib/sandboxed_renderer/init.js
@@ -100,7 +100,7 @@ function preloadRequire (module) {
   if (remoteModules.has(module)) {
     return require(module)
   }
-  throw new Error('module not found')
+  throw new Error(`module not found: ${module}`)
 }
 
 switch (window.location.protocol) {