diff --git a/dom/system/gonk/RILContentHelper.js b/dom/system/gonk/RILContentHelper.js
index 1714c5168d44..77462381851b 100644
--- a/dom/system/gonk/RILContentHelper.js
+++ b/dom/system/gonk/RILContentHelper.js
@@ -135,6 +135,7 @@ function RILContentHelper() {
   this.initDOMRequestHelper(/* aWindow */ null, RIL_IPC_MSG_NAMES);
   this._windowsMap = [];
   this._iccListeners = [];
+  this._iccChannelCallback = [];
 
   Services.obs.addObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID, false);
 
@@ -593,6 +594,8 @@ RILContentHelper.prototype = {
     }
   },
 
+  _iccChannelCallback: null,
+
   _addIccChannelCallback: function(requestId, channelCb) {
     let cbInterfaces = this._iccChannelCallback;
     if (!cbInterfaces[requestId] && channelCb) {