diff --git a/src/wizardHandler.js b/src/wizardHandler.js
index 8957c94..8bdceb3 100644
--- a/src/wizardHandler.js
+++ b/src/wizardHandler.js
@@ -1,26 +1,39 @@
 angular.module('mgo-angular-wizard').factory('WizardHandler', function() {
    var service = {};
-   
+
    var wizards = {};
-   
+
+    var duplicate = {};
+
    service.defaultName = "defaultWizard";
-   
-   service.addWizard = function(name, wizard) {
-       wizards[name] = wizard;
+
+   service.addWizard = function (name, wizard) {
+       if (wizards[name]) {
+           duplicate[name] = wizards[name];
+           wizards[name] = wizard;
+           return true;
+       } else {
+           wizards[name] = wizard;return false;
+       }
    };
-   
-   service.removeWizard = function(name) {
+
+   service.removeWizard = function (name) {
+       if (duplicate[name]) {
+           delete duplicate[name];
+           return true;
+       }
        delete wizards[name];
+       return false;
    };
-   
+
    service.wizard = function(name) {
        var nameToUse = name;
        if (!name) {
            nameToUse = service.defaultName;
        }
-       
+
        return wizards[nameToUse];
    };
-   
+
    return service;
 });