1 files changed, 2 insertions, 2 deletions
diff --git a/app/models/merge_request.rb b/app/models/merge_request.rb
index 1245cc16d6a..45c3b0a3a66 100644
--- a/app/models/merge_request.rb
+++ b/app/models/merge_request.rb
@@ -149,14 +149,14 @@ class MergeRequest < ActiveRecord::Base
   #
   # This pattern supports cross-project references.
   def self.reference_pattern
-    %r{
+    @reference_pattern ||= %r{
       (#{Project.reference_pattern})?
       #{Regexp.escape(reference_prefix)}(?<merge_request>\d+)
     }x
   end
 
   def self.link_reference_pattern
-    super("merge_requests", /(?<merge_request>\d+)/)
+    @link_reference_pattern ||= super("merge_requests", /(?<merge_request>\d+)/)
   end
 
   # Returns all the merge requests from an ActiveRecord:Relation.