diff --git a/guides/source/api_documentation_guidelines.textile b/guides/source/api_documentation_guidelines.textile
index 14dddea4db69b7b94a6fa3b4857c77b93d1bfae1..444490bf0cfdbedec9ae84a1b54877e8aade341a 100644
--- a/guides/source/api_documentation_guidelines.textile
+++ b/guides/source/api_documentation_guidelines.textile
@@ -1,4 +1,4 @@
-	h2. API Documentation Guidelines
+h2. API Documentation Guidelines
 
 This guide documents the Ruby on Rails API documentation guidelines.