diff --git a/superset/assets/javascripts/chart/chartReducer.js b/superset/assets/javascripts/chart/chartReducer.js
index 2adb904687589..7d5b23c32feab 100644
--- a/superset/assets/javascripts/chart/chartReducer.js
+++ b/superset/assets/javascripts/chart/chartReducer.js
@@ -62,7 +62,7 @@ export default function chartReducer(charts = {}, action) {
       return { ...state,
         chartStatus: 'failed',
         chartAlert: (
-        "<strong>{t('Query timeout')}</strong> - " +
+        `<strong>${t('Query timeout')}</strong> - ` +
         t(`visualization queries are set to timeout at ${action.timeout} seconds. `) +
         t('Perhaps your data has grown, your database is under unusual load, ' +
           'or you are simply querying a data source that is too large ' +