diff --git a/phpgwapi/js/jsapi/egw_preferences.js b/phpgwapi/js/jsapi/egw_preferences.js
index 2a1b3d57a7..2f31573f2b 100644
--- a/phpgwapi/js/jsapi/egw_preferences.js
+++ b/phpgwapi/js/jsapi/egw_preferences.js
@@ -79,10 +79,11 @@ egw.extend('preferences', egw.MODULE_GLOBAL, function() {
 		 * @param {string} _app application name or "common"
 		 * @param {string} _name name of the pref
 		 * @param {string} _val value of the pref
+		 * @param {function} _callback Function passed along to the queue, called after preference is set server-side
 		 */
-		set_preference: function(_app, _name, _val)
+		set_preference: function(_app, _name, _val, _callback)
 		{
-			this.jsonq('home.egw_framework.ajax_set_preference.template',[_app, _name, _val]);
+			this.jsonq('home.egw_framework.ajax_set_preference.template',[_app, _name, _val], _callback);
 
 			// update own preference cache, if _app prefs are loaded (dont update otherwise, as it would block loading of other _app prefs!)
 			if (typeof prefs[_app] != 'undefined') prefs[_app][_name] = _val;