diff --git a/js/plugin/Sidebar.js b/js/plugin/Sidebar.js
index 36269f2..c8e16be 100644
--- a/js/plugin/Sidebar.js
+++ b/js/plugin/Sidebar.js
@@ -79,7 +79,7 @@ BR.Sidebar = L.Control.Sidebar.extend({
                 // not set: closed by default for new users
                 tabId = '';
             }
-            if (tabId !== '') {
+            if (tabId !== '' && this._getTab(tabId)) {
                 this.open(tabId);
             }
         }