diff --git a/knockout.activity.js b/knockout.activity.js
index 19d73d4..25fd636 100644
--- a/knockout.activity.js
+++ b/knockout.activity.js
@@ -15,14 +15,8 @@
     throw 'Knockout is required, please ensure it is loaded before loading the activity plug-in';
   }
 
-  var defaultOptions = {
-    activityClass: 'fa fa-spinner fa-spin',
-    container: 'i',
-    inactiveClass: ''
-  };
-
   function getOptions(overrides) {
-    var options = ko.utils.extend({}, defaultOptions);
+    var options = ko.utils.extend({}, ko.bindingHandlers.activity.defaultOptions);
 
     return ko.utils.extend(options, overrides);
   }
@@ -55,4 +49,10 @@
       }
     }
   };
+  
+  ko.bindingHandlers.activity.defaultOptions = {
+    activityClass: 'fa fa-spinner fa-spin',
+    container: 'i',
+    inactiveClass: ''
+  };
 }));