diff --git a/spec/fixtures/files/filter_record_transformer.conf b/spec/fixtures/files/filter_record_transformer.conf
index 58aadb6..6131586 100644
--- a/spec/fixtures/files/filter_record_transformer.conf
+++ b/spec/fixtures/files/filter_record_transformer.conf
@@ -1,6 +1,6 @@
 <filter *.test>
-        type record_transformer
-        <record>
-            hostname ${hostname}
-        </record>
+  type record_transformer
+  <record>
+    hostname ${hostname}
+  </record>
 </filter>
diff --git a/spec/fixtures/files/match_copy.conf b/spec/fixtures/files/match_copy.conf
index 7a45925..6359617 100644
--- a/spec/fixtures/files/match_copy.conf
+++ b/spec/fixtures/files/match_copy.conf
@@ -1,13 +1,13 @@
 <match *.test>
-        type copy
-            <store>
-                        type elasticsearch
-                        logstashformat true
-                        hosts 172.20.10.17:9200
-                        flush_interval 30s
-            </store>
-            <store>
-                        type file
-                        path /tmp/td-agent-debug.log
-            </store>
+  type copy
+  <store>
+    type elasticsearch
+    logstashformat true
+    hosts 172.20.10.17:9200
+    flush_interval 30s
+  </store>
+  <store>
+    type file
+    path /tmp/td-agent-debug.log
+  </store>
 </match>
diff --git a/spec/fixtures/files/match_secure_forward.conf b/spec/fixtures/files/match_secure_forward.conf
index 1218ba0..c843099 100644
--- a/spec/fixtures/files/match_secure_forward.conf
+++ b/spec/fixtures/files/match_secure_forward.conf
@@ -1,11 +1,11 @@
 <match *.test>
-        flush_interval 30s
-        type secure_forward
-        secure yes
-        shared_key my_shared_key
-        self_hostname instance.test.com
-        ca_cert_path /path/to/ca.cert
-            <server>
-                        host test.server.com
-            </server>
+  flush_interval 30s
+  type secure_forward
+  secure yes
+  shared_key my_shared_key
+  self_hostname instance.test.com
+  ca_cert_path /path/to/ca.cert
+  <server>
+    host test.server.com
+  </server>
 </match>
diff --git a/spec/fixtures/files/source_tail.conf b/spec/fixtures/files/source_tail.conf
index 15b5dad..4eb4061 100644
--- a/spec/fixtures/files/source_tail.conf
+++ b/spec/fixtures/files/source_tail.conf
@@ -1,6 +1,6 @@
 <source>
-    type tail
-    format json
-    path /var/log/test-application/*.json
-    tag application.test
+  type tail
+  format json
+  path /var/log/test-application/*.json
+  tag application.test
 </source>
diff --git a/templates/filter.erb b/templates/filter.erb
index 830cfdb..289c167 100644
--- a/templates/filter.erb
+++ b/templates/filter.erb
@@ -1,13 +1,13 @@
 <filter <%= @pattern %>>
 <% @config.each do |key, val| -%>
-    <%- if val.is_a?( Hash ) -%>
-        <<%= key -%>>
-        <%- val.each do |key2, val2| -%>
-            <%= key2 -%> <%= val2 %>
-        <%- end -%>
-        </<%= key %>>
-    <%- else -%>
-        <%= key -%> <%= val %>
-    <%- end -%>
+  <%- if val.is_a?( Hash ) -%>
+  <<%= key -%>>
+  <%- val.each do |key2, val2| -%>
+    <%= key2 -%> <%= val2 %>
+  <%- end -%>
+  </<%= key %>>
+  <%- else -%>
+  <%= key -%> <%= val %>
+  <%- end -%>
 <% end -%>
 </filter>
diff --git a/templates/match.erb b/templates/match.erb
index 25e1a0c..f623894 100644
--- a/templates/match.erb
+++ b/templates/match.erb
@@ -1,39 +1,39 @@
 <match <%= @pattern %>>
 <% @config.each do |key, val| -%>
-    <%- if val.is_a?( Hash ) -%>
-        <<%= key -%>>
-        <%- val.each do |key, val| -%>
-            <%= key -%> <%= val %>
-        <%- end -%>
-        </<%= key %>>
-    <%- elsif val.is_a?( Array ) -%>
-        <%- val.each do |k, v| -%>
-            <<%= key -%>>
-            <%- if k.is_a?( Hash ) -%>
-                <%- k.each do |x, y| -%>
-                    <%- if y.is_a?( Array ) -%>
-                        <%- y.each do |a, b| -%>
-                            <<%= x -%>>
-                            <%- if a.is_a?( Hash ) -%>
-                                <%- a.each do |c, d| -%>
-                                    <%= c -%> <%= d %>
-                                <%- end -%>
-                            <%- else -%>
-                                <%= a -%> <%= b %>
-                            <%- end -%>
-                            </<%= x %>>
-                        <%- end -%>
-                    <%- else -%>
-                        <%= x -%> <%= y %>
-                    <%- end -%>
-                <%- end -%>
-            <%- else -%>
-                <%= k -%> <%= v %>
-            <%- end -%>
-            </<%= key %>>
-        <%- end -%>
-    <%- else -%>
-        <%= key -%> <%= val %>
+  <%- if val.is_a?( Hash ) -%>
+  <<%= key -%>>
+  <%- val.each do |key, val| -%>
+    <%= key -%> <%= val %>
+  <%- end -%>
+  </<%= key %>>
+  <%- elsif val.is_a?( Array ) -%>
+  <%- val.each do |k, v| -%>
+  <<%= key -%>>
+    <%- if k.is_a?( Hash ) -%>
+    <%- k.each do |x, y| -%>
+    <%- if y.is_a?( Array ) -%>
+    <%- y.each do |a, b| -%>
+    <<%= x -%>>
+      <%- if a.is_a?( Hash ) -%>
+      <%- a.each do |c, d| -%>
+      <%= c -%> <%= d %>
+      <%- end -%>
+      <%- else -%>
+      <%= a -%> <%= b %>
+      <%- end -%>
+    </<%= x %>>
     <%- end -%>
+    <%- else -%>
+    <%= x -%> <%= y %>
+    <%- end -%>
+    <%- end -%>
+    <%- else -%>
+    <%= k -%> <%= v %>
+    <%- end -%>
+  </<%= key %>>
+  <%- end -%>
+  <%- else -%>
+  <%= key -%> <%= val %>
+  <%- end -%>
 <% end -%>
 </match>
diff --git a/templates/source.erb b/templates/source.erb
index 503c9f9..04f119a 100644
--- a/templates/source.erb
+++ b/templates/source.erb
@@ -1,5 +1,5 @@
 <source>
 <% @config.each do |key, val| -%>
-    <%= key -%> <%= val %>
+  <%= key -%> <%= val %>
 <% end -%>
 </source>