diff --git a/app/views/fluentd/settings/in_syslog/_form.html.haml b/app/views/fluentd/settings/in_syslog/_form.html.haml
index 8ebf027..4c13a93 100644
--- a/app/views/fluentd/settings/in_syslog/_form.html.haml
+++ b/app/views/fluentd/settings/in_syslog/_form.html.haml
@@ -1,5 +1,4 @@
-- @setting.errors.full_messages.each do |msg|
-  = msg
+= render "shared/setting_errors"
 
 = form_for(@setting, url: finish_fluentd_setting_in_syslog_path(@fluentd), html: {class: "ignore-rails-error-div"}) do |f|
   = field(f, :tag)
diff --git a/app/views/fluentd/settings/out_forward/_form.html.haml b/app/views/fluentd/settings/out_forward/_form.html.haml
index 25209a4..e22b312 100644
--- a/app/views/fluentd/settings/out_forward/_form.html.haml
+++ b/app/views/fluentd/settings/out_forward/_form.html.haml
@@ -1,5 +1,4 @@
-- @setting.errors.full_messages.each do |msg|
-  = msg
+= render "shared/setting_errors"
 
 = form_for(@setting, url: finish_fluentd_setting_out_forward_path(@fluentd), html: {class: "ignore-rails-error-div"}) do |f|
   = field(f, :match)
diff --git a/app/views/fluentd/settings/out_mongo/_form.html.haml b/app/views/fluentd/settings/out_mongo/_form.html.haml
index 9695c0d..2c82c02 100644
--- a/app/views/fluentd/settings/out_mongo/_form.html.haml
+++ b/app/views/fluentd/settings/out_mongo/_form.html.haml
@@ -1,5 +1,4 @@
-- @setting.errors.full_messages.each do |msg|
-  = msg
+= render "shared/setting_errors"
 
 = form_for(@setting, url: finish_fluentd_setting_out_mongo_path(@fluentd), html: {class: "ignore-rails-error-div"}) do |f|
   = field(f, :match)
diff --git a/app/views/fluentd/settings/out_s3/_form.html.haml b/app/views/fluentd/settings/out_s3/_form.html.haml
index 7523f98..d733cdd 100644
--- a/app/views/fluentd/settings/out_s3/_form.html.haml
+++ b/app/views/fluentd/settings/out_s3/_form.html.haml
@@ -1,5 +1,4 @@
-- @setting.errors.full_messages.each do |msg|
-  = msg
+= render "shared/setting_errors"
 
 = form_for(@setting, url: finish_fluentd_setting_out_s3_path(@fluentd), html: {class: "ignore-rails-error-div"}) do |f|
   = field(f, :match)
diff --git a/app/views/fluentd/settings/out_td/_form.html.haml b/app/views/fluentd/settings/out_td/_form.html.haml
index 68026cf..7ade849 100644
--- a/app/views/fluentd/settings/out_td/_form.html.haml
+++ b/app/views/fluentd/settings/out_td/_form.html.haml
@@ -1,5 +1,4 @@
-- @setting.errors.full_messages.each do |msg|
-  = msg
+= render "shared/setting_errors"
 
 = form_for(@setting, url: finish_fluentd_setting_out_td_path(@fluentd), html: {class: "ignore-rails-error-div"}) do |f|
   = field(f, :match)
diff --git a/app/views/shared/_setting_errors.html.haml b/app/views/shared/_setting_errors.html.haml
new file mode 100644
index 0000000..425c4d7
--- /dev/null
+++ b/app/views/shared/_setting_errors.html.haml
@@ -0,0 +1,5 @@
+- if request.post? && !@setting.valid?
+  .well.well-sm
+    - @setting.errors.full_messages.each do |msg|
+      .text.text-danger= msg
+