diff --git a/app/controllers/projects/merge_requests_controller.rb b/app/controllers/projects/merge_requests_controller.rb
index c1231994f25918d76e3a23a32a9f26d6c3125f6c..7574842cd432d0782e748bf27b8d572de8099b89 100644
--- a/app/controllers/projects/merge_requests_controller.rb
+++ b/app/controllers/projects/merge_requests_controller.rb
@@ -258,8 +258,7 @@ class Projects::MergeRequestsController < Projects::ApplicationController
     @commits = @merge_request.commits
 
     @merge_request_diff = @merge_request.merge_request_diff
-    @source_branch = @merge_request.source_project.repository.find_branch(@merge_request.source_branch).try(:name)
-
+    
     if @merge_request.locked_long_ago?
       @merge_request.unlock_mr
       @merge_request.close
diff --git a/app/views/projects/merge_requests/widget/_merged.html.haml b/app/views/projects/merge_requests/widget/_merged.html.haml
index d22dfa085b8015210901c492f1c165d6cffc3919..f223f687defbc42965249a821e85b79c92efe48c 100644
--- a/app/views/projects/merge_requests/widget/_merged.html.haml
+++ b/app/views/projects/merge_requests/widget/_merged.html.haml
@@ -20,7 +20,7 @@
               The changes were merged into
               %span.label-branch= @merge_request.target_branch
             You can remove the source branch now.
-          = link_to namespace_project_branch_path(@merge_request.source_project.namespace, @merge_request.source_project, @source_branch), remote: true, method: :delete, class: "btn btn-primary btn-sm remove_source_branch" do
+          = link_to namespace_project_branch_path(@merge_request.source_project.namespace, @merge_request.source_project, @merge_request.source_branch), remote: true, method: :delete, class: "btn btn-primary btn-sm remove_source_branch" do
             %i.fa.fa-times
             Remove Source Branch