diff --git a/src/config-schema.es6 b/src/config-schema.es6
index 4c44bc716..156a487ff 100644
--- a/src/config-schema.es6
+++ b/src/config-schema.es6
@@ -34,7 +34,7 @@ export default {
           showOfflineNotification: {
             'type': 'boolean',
             'default': true,
-            'title': 'Show offline notification popup',
+            'title': "Show offline notification popup",
           },
           interfaceZoom: {
             'title': "Override standard interface scaling",