--- a/mobile/android/components/SessionStore.js
+++ b/mobile/android/components/SessionStore.js
@@ -563,17 +563,17 @@ SessionStore.prototype = {
     this._updateCrashReportURL(aWindow);
   },
 
   onTabRemove: function ss_onTabRemove(aWindow, aBrowser, aNoNotification) {
     // Cleanup event listeners
     aBrowser.removeEventListener("DOMTitleChanged", this, true);
     aBrowser.removeEventListener("load", this, true);
     aBrowser.removeEventListener("pageshow", this, true);
-    aBrowser.removeListener("AboutReaderContentReady", this, true);
+    aBrowser.removeEventListener("AboutReaderContentReady", this, true);
     aBrowser.removeEventListener("change", this, true);
     aBrowser.removeEventListener("input", this, true);
     aBrowser.removeEventListener("DOMAutoComplete", this, true);
     aBrowser.removeEventListener("scroll", this, true);
     aBrowser.removeEventListener("resize", this, true);
 
     delete aBrowser.__SS_data;