diff --git a/.eslintrc.es6.json b/.eslintrc.es6.json
index 3ca43d7a6e..c46a3bf25a 100644
--- a/.eslintrc.es6.json
+++ b/.eslintrc.es6.json
@@ -48,7 +48,6 @@
     "camelcase": 0,
     "eqeqeq": 0,
     "space-unary-ops": 0,
-    "no-useless-concat": 0,
     "no-sequences": 0,
     "no-extra-boolean-cast": 0,
     "dot-notation": 0,
diff --git a/assets/js/src/newsletters/send/standard.jsx b/assets/js/src/newsletters/send/standard.jsx
index f3900ecfe9..49de376303 100644
--- a/assets/js/src/newsletters/send/standard.jsx
+++ b/assets/js/src/newsletters/send/standard.jsx
@@ -17,7 +17,7 @@ define(
     const jQuery = jq;
 
     const currentTime = window.mailpoet_current_time || '00:00';
-    const defaultDateTime = window.mailpoet_current_date + ' ' + '00:00:00';
+    const defaultDateTime = window.mailpoet_current_date + ' 00:00:00';
     const timeOfDayItems = window.mailpoet_schedule_time_of_day;
     const dateDisplayFormat = window.mailpoet_date_display_format;
     const dateStorageFormat = window.mailpoet_date_storage_format;