diff --git a/browser/devtools/layoutview/test/browser_layoutview.js b/browser/devtools/layoutview/test/browser_layoutview.js
index 157b83bcac7..aee4402daed 100644
--- a/browser/devtools/layoutview/test/browser_layoutview.js
+++ b/browser/devtools/layoutview/test/browser_layoutview.js
@@ -82,8 +82,6 @@ function test() {
   function viewReady(e) {
     if (e.data != "layoutview-ready") return;
 
-    window.removeEventListener("message", viewReady, true);
-
     info("Layout view ready");
 
     view = InspectorUI._sidebar._layoutview;