diff --git a/api/js/jsapi/egw_store.js b/api/js/jsapi/egw_store.js
index 30864ad835..a9ccda3889 100644
--- a/api/js/jsapi/egw_store.js
+++ b/api/js/jsapi/egw_store.js
@@ -77,7 +77,7 @@ egw.extend('store', egw.MODULE_GLOBAL, function(_app, _wnd)
 		 * @returns {@exp;window@pro;sessionStorage@call;removeItem}
 		 */
 		removeSessionItem: function(application, key) {
-			key = uniqueKey(application, key);
+			key = mapKey(application, key);
 			return _wnd.sessionStorage.removeItem(key);
 		},