diff --git a/dom/apps/AppsServiceChild.jsm b/dom/apps/AppsServiceChild.jsm
index 5c50652995de..6d041c32b151 100644
--- a/dom/apps/AppsServiceChild.jsm
+++ b/dom/apps/AppsServiceChild.jsm
@@ -131,6 +131,9 @@ this.DOMApplicationRegistry = {
     APPS_IPC_MSG_NAMES.forEach((aMsgName) => {
       this.cpmm.removeMessageListener(aMsgName, this);
     });
+
+    this.cpmm.sendAsyncMessage("Webapps:UnregisterForMessages",
+                               APPS_IPC_MSG_NAMES)
   },
 
   receiveMessage: function receiveMessage(aMessage) {