diff --git a/dist/index.html b/dist/index.html
index 20d33e9a4..d15674651 100644
--- a/dist/index.html
+++ b/dist/index.html
@@ -48,7 +48,11 @@
                     },
 
                     set: function() {
-                        throw new Error("tried to overwrite window.focus");
+                        try {
+                            throw new Error("tried to overwrite window.focus");
+                        } catch(e) {
+                            Raven.captureException(e);
+                        }
                     }
                 });
             }
diff --git a/index.html b/index.html
index 47c1fa6c2..17a8967f7 100644
--- a/index.html
+++ b/index.html
@@ -195,20 +195,6 @@
     <body>
         <div id='id-container'></div>
         <script>
-            // Adding a canary for https://app.getsentry.com/id/id/group/5138888/
-            if (Object.defineProperty) {
-                var windowFocus = window.focus;
-                Object.defineProperty(window, 'focus', {
-                    get: function() {
-                        return windowFocus;
-                    },
-
-                    set: function() {
-                        throw new Error("tried to overwrite window.focus");
-                    }
-                });
-            }
-
             iD.data.load(function() {
                 id = iD().assetPath('dist/');
 
