diff --git a/railties/lib/generator/generators/app.rb b/railties/lib/generator/generators/app.rb
index 97bd034decc0ae4acdff49de572c57f3cd97bb71..f5e83460d7a3c39102f80f14c73c2f6b026f47ba 100644
--- a/railties/lib/generator/generators/app.rb
+++ b/railties/lib/generator/generators/app.rb
@@ -1,4 +1,4 @@
-require File.dirname(__FILE__) + '/../../rails/version'
+require File.dirname(__FILE__) + '/../../rails/version' unless defined?(Rails::VERSION)
 require File.dirname(__FILE__) + '/../base'
 require 'digest/md5' 
 require 'active_support/secure_random'