diff --git a/templates/materialize.html b/templates/materialize.html
index 359835b..13c1063 100644
--- a/templates/materialize.html
+++ b/templates/materialize.html
@@ -1,6 +1,6 @@
 <template name="status_materialize">
   {{#unless connected}}
-    <div class="center card-panel orange lighten-5 {{classes}}">
+    <div class="center card-panel orange lighten-5 {{option 'classes'}}">
       <span class="lime-text text-darken-4">
       <strong>
         <i class="small mdi-alert-warning"></i>