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/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>