diff --git a/readme.md b/readme.md
index 32bf487..8e923db 100644
--- a/readme.md
+++ b/readme.md
@@ -12,6 +12,7 @@ Options:
 ## Requirements
 
 Refinery CMS version 1.0.0 or above.
+Your Rails 3 application should not be called "blog"
 
 ## Install