diff --git a/scm-webapp/src/main/webapp/resources/js/plugin/sonia.plugin.center.js b/scm-webapp/src/main/webapp/resources/js/plugin/sonia.plugin.center.js
index 5045d886a4..1071902768 100644
--- a/scm-webapp/src/main/webapp/resources/js/plugin/sonia.plugin.center.js
+++ b/scm-webapp/src/main/webapp/resources/js/plugin/sonia.plugin.center.js
@@ -148,7 +148,7 @@ Sonia.plugin.Center = Ext.extend(Ext.util.Observable, {
       console.debug( 'update plugin to ' + pluginId );
     }
 
-    var loadingBox = createLoadingBox( this.updateWaitMsgText );
+    var loadingBox = this.createLoadingBox( this.updateWaitMsgText );
 
     Ext.Ajax.request({
       url: restUrl + 'plugins/update/' + pluginId + '.json',