diff --git a/app/views/fluentd/settings/source_and_output.html.haml b/app/views/fluentd/settings/source_and_output.html.haml
index d086e5b..e070615 100644
--- a/app/views/fluentd/settings/source_and_output.html.haml
+++ b/app/views/fluentd/settings/source_and_output.html.haml
@@ -7,7 +7,7 @@
       .card-header
         %h4= t('.in')
       .card-body
-        - %w|tail syslog monitor_agent http forward|.each do |type|
+        - %w(tail syslog monitor_agent http forward).each do |type|
           %p
             = link_to(send("daemon_setting_in_#{type}_path", @fluentd)) do
               = icon('fa-file-text-o fa-lg')
@@ -23,7 +23,7 @@
       .card-header
         %h4= t('.out')
       .card-body
-        - %w|stdout tdlog s3 mongo elasticsearch forward|.each do |type|
+        - %w(stdout tdlog s3 mongo elasticsearch forward).each do |type|
           %p
             = link_to(send("daemon_setting_out_#{type}_path", @fluentd)) do
               = icon('fa-file-text-o fa-lg')