diff --git a/panels/config/customize/types/ha-customize-boolean.html b/panels/config/customize/types/ha-customize-boolean.html
index 094ffd61da..8cb8619fd4 100644
--- a/panels/config/customize/types/ha-customize-boolean.html
+++ b/panels/config/customize/types/ha-customize-boolean.html
@@ -5,7 +5,7 @@
   <template>
     <paper-checkbox
       disabled='[[item.secondary]]'
-      checked="[[item.value]]"
+      checked="{{item.value}}"
     >
       [[item.description]]
     </paper-checkbox>