diff --git a/app/helpers/nav_helper.rb b/app/helpers/nav_helper.rb
index 2c299d1d794cf880b2cbc365c9ee9c1bd5ac4a9b..75f2ed5e0541fb2b37e709ee932ab37d2cba19a6 100644
--- a/app/helpers/nav_helper.rb
+++ b/app/helpers/nav_helper.rb
@@ -32,8 +32,10 @@ module NavHelper
   end
 
   def page_gutter_class
-
-    if current_path?('merge_requests#show') || current_path?('issues#show')
+    if current_path?('merge_requests#show') || 
+      current_path?('merge_requests#diffs') || 
+      current_path?('merge_requests#commits') || 
+      current_path?('issues#show')
       if cookies[:collapsed_gutter] == 'true'
         "page-gutter right-sidebar-collapsed"
       else