diff --git a/lib/api_docs/web.rb b/lib/api_docs/web.rb
index 85deab1..3c47410 100644
--- a/lib/api_docs/web.rb
+++ b/lib/api_docs/web.rb
@@ -17,7 +17,7 @@ class Web < Sinatra::Base
     helpers do
       def controllers
         @controllers ||= begin
-          Dir.glob(ApiDocs.config.docs_path.join('*.yml')).sort.inject({}) do |memo, file_path|
+          Dir.glob(ApiDocs.config.docs_path.join('**/*.yml')).sort.inject({}) do |memo, file_path|
             memo[File.basename(file_path, '.yml')] = Content.new(file_path)
             memo
           end