diff --git a/app/views/fluentd/settings/source_and_output.html.haml b/app/views/fluentd/settings/source_and_output.html.haml
index 1187a0c..97975b2 100644
--- a/app/views/fluentd/settings/source_and_output.html.haml
+++ b/app/views/fluentd/settings/source_and_output.html.haml
@@ -34,7 +34,7 @@
   %h2
     = t('.current')
     .float-right
-      %button.btn.btn-default.btn-sm{"v-on" => "click: update", "v-if" => "!loading"}= icon('fa-refresh')
+      %button.btn.btn-default.btn-sm{"v-on:click" => "update", "v-if" => "!loading"}= icon('fa-refresh')
       %button.btn.btn-default.btn-sm{"v-if" => "loading"}= icon('fa-spin fa-refresh')
   .row
     .col-xl-6.input