diff --git a/app/controllers/repositories_controller.rb b/app/controllers/repositories_controller.rb
index 72104d575..b5f70e3f0 100644
--- a/app/controllers/repositories_controller.rb
+++ b/app/controllers/repositories_controller.rb
@@ -139,7 +139,7 @@ class RepositoriesController < ApplicationController
   end
   
   def revision
-    raise ChangesetNotFound if @rev.nil? || @rev.empty?
+    raise ChangesetNotFound if @rev.blank?
     @changeset = @repository.find_changeset_by_name(@rev)
     raise ChangesetNotFound unless @changeset