diff --git a/lib/renderer/inspector.js b/lib/renderer/inspector.js
index 12d3ae907243..aea87f7f2b81 100644
--- a/lib/renderer/inspector.js
+++ b/lib/renderer/inspector.js
@@ -1,6 +1,6 @@
 window.onload = function () {
   // Make sure |window.chrome| is defined for devtools extensions.
-  hijackSetInjectedScript(InspectorFrontendHost)
+  hijackSetInjectedScript(window.InspectorFrontendHost)
 
   // Use menu API to show context menu.
   window.InspectorFrontendHost.showContextMenuAtPoint = createMenu