diff --git a/guides/source/action_cable_overview.md b/guides/source/action_cable_overview.md
index 1a86b1fcbb..c250db2e0c 100644
--- a/guides/source/action_cable_overview.md
+++ b/guides/source/action_cable_overview.md
@@ -1,3 +1,5 @@
+**DO NOT READ THIS FILE ON GITHUB, GUIDES ARE PUBLISHED ON http://guides.rubyonrails.org.**
+
 Action Cable Overview
 =====================
 
diff --git a/guides/source/api_app.md b/guides/source/api_app.md
index b360f270d7..b4d90d31de 100644
--- a/guides/source/api_app.md
+++ b/guides/source/api_app.md
@@ -1,6 +1,5 @@
 **DO NOT READ THIS FILE ON GITHUB, GUIDES ARE PUBLISHED ON http://guides.rubyonrails.org.**
 
-
 Using Rails for API-only Applications
 =====================================