diff --git a/app/views/repositories/_revisions.html.erb b/app/views/repositories/_revisions.html.erb
index cb583689d..5b6ad6da0 100644
--- a/app/views/repositories/_revisions.html.erb
+++ b/app/views/repositories/_revisions.html.erb
@@ -1,6 +1,6 @@
 <% show_revision_graph = ( @repository.supports_revision_graph? && path.blank? ) %>
 <% form_tag(
-      {:controller => 'repositories', :action => 'diff', :id => @project,
+      {:controller => 'repositories', :action => 'diff', :id => project,
        :repository_id => @repository.identifier_param, :path => to_path_param(path)},
       :method => :get
      ) do %>