diff --git a/devtools/client/aboutdebugging/aboutdebugging.js b/devtools/client/aboutdebugging/aboutdebugging.js
index c6c633c7504d..8366aa9b78f6 100644
--- a/devtools/client/aboutdebugging/aboutdebugging.js
+++ b/devtools/client/aboutdebugging/aboutdebugging.js
@@ -107,6 +107,9 @@ var AboutDebugging = {
       Services.prefs.removeObserver(pref, listener);
     });
     this._prefListeners = [];
+
+    React.unmountComponentAtNode(document.querySelector("#addons"));
+    React.unmountComponentAtNode(document.querySelector("#workers"));
   },
 };