--- a/b2g/chrome/content/devtools.js
+++ b/b2g/chrome/content/devtools.js
@@ -267,24 +267,17 @@ Target.prototype = {
    * widgets.
    */
   destroy: function target_destroy() {
     delete this.metrics;
     this._send({});
   },
 
   _send: function target_send(data) {
-    let frame = this.frame;
-
-    let systemapp = document.querySelector('#systemapp');
-    if (this.frame === systemapp) {
-      frame = getContentWindow();
-    }
-
-    shell.sendEvent(frame, 'developer-hud-update', Cu.cloneInto(data, target));
+    shell.sendEvent(this.frame, 'developer-hud-update', Cu.cloneInto(data, this.frame));
   }
 
 };
 
 
 /**
  * The Console Watcher tracks the following metrics in apps: reflows, warnings,
  * and errors, with security errors reported separately.