diff --git a/js/app/AmdaApp.js b/js/app/AmdaApp.js
index 9dcabfd..d0f5ff1 100755
--- a/js/app/AmdaApp.js
+++ b/js/app/AmdaApp.js
@@ -190,7 +190,7 @@ Ext.define('amdaApp.AmdaApp', {
 		this.callParent();
 
 		// TT duration management
-        Ext.state.Manager.getProvider().set('tt_duration', 4);
+        Ext.state.Manager.getProvider().set('tt_duration', 3);
 		
 		// now ready...
 		//override createWindow method of desktop
--
libgit2 0.21.2