diff --git a/config/routes.rb b/config/routes.rb
index 1a02d02c3..3cee3242b 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -250,7 +250,10 @@ ActionController::Routing::Routes.draw do |map|
       repository_views.connect 'projects/:id/repository/revisions/:rev/raw/*path',
                                :action => 'entry', :format => 'raw'
       repository_views.connect 'projects/:id/repository/revisions/:rev/:action/*path',
-                               :requirements => { :action => /(browse|show|entry|changes|annotate|diff)/ }
+                               :requirements => { 
+                                   :action => /(browse|show|entry|changes|annotate|diff)/,
+                                   :rev    => /[a-z0-9\.\-_]+/
+                                     }
       repository_views.connect 'projects/:id/repository/raw/*path',
                                :action => 'entry', :format => 'raw'
       repository_views.connect 'projects/:id/repository/:action/*path',
@@ -274,7 +277,10 @@ ActionController::Routing::Routes.draw do |map|
       repository_views.connect 'projects/:id/repository/:repository_id/revisions/:rev/raw/*path',
                                :action => 'entry', :format => 'raw'
       repository_views.connect 'projects/:id/repository/:repository_id/revisions/:rev/:action/*path',
-                               :requirements => { :action => /(browse|show|entry|changes|annotate|diff)/ }
+                               :requirements => { 
+                                   :action => /(browse|show|entry|changes|annotate|diff)/,
+                                   :rev    => /[a-z0-9\.\-_]+/
+                                     }
       repository_views.connect 'projects/:id/repository/:repository_id/raw/*path',
                                :action => 'entry', :format => 'raw'
       repository_views.connect 'projects/:id/repository/:repository_id/:action/*path',