diff --git a/app/controllers/projects/merge_requests_controller.rb b/app/controllers/projects/merge_requests_controller.rb
index d8551db7b01..a0a8aa059ec 100644
--- a/app/controllers/projects/merge_requests_controller.rb
+++ b/app/controllers/projects/merge_requests_controller.rb
@@ -225,7 +225,6 @@ class Projects::MergeRequestsController < Projects::ApplicationController
     @merge_request_diff = @merge_request.merge_request_diff
     @allowed_to_merge = allowed_to_merge?
     @show_merge_controls = @merge_request.open? && @commits.any? && @allowed_to_merge
-    @allowed_to_remove_source_branch = allowed_to_remove_source_branch?
     @source_branch = @merge_request.source_project.repository.find_branch(@merge_request.source_branch).try(:name)
   end
 
@@ -238,11 +237,6 @@ class Projects::MergeRequestsController < Projects::ApplicationController
     render 'invalid'
   end
 
-  def allowed_to_remove_source_branch?
-    allowed_to_push_code?(@merge_request.source_project, @merge_request.source_branch) &&
-      !@merge_request.disallow_source_branch_removal?
-  end
-
   def allowed_to_push_code?(project, branch)
     action = if project.protected_branch?(branch)
                :push_code_to_protected_branches
diff --git a/app/models/merge_request.rb b/app/models/merge_request.rb
index 061537132b3..b7c4a2a923c 100644
--- a/app/models/merge_request.rb
+++ b/app/models/merge_request.rb
@@ -212,10 +212,6 @@ class MergeRequest < ActiveRecord::Base
     target_project != source_project
   end
 
-  def disallow_source_branch_removal?
-    source_project.root_ref?(source_branch) || source_project.protected_branches.include?(source_branch)
-  end
-
   def project
     target_project
   end
diff --git a/app/views/projects/merge_requests/show/_mr_accept.html.haml b/app/views/projects/merge_requests/show/_mr_accept.html.haml
index 1276489c2d9..07e05f55012 100644
--- a/app/views/projects/merge_requests/show/_mr_accept.html.haml
+++ b/app/views/projects/merge_requests/show/_mr_accept.html.haml
@@ -38,7 +38,7 @@
         .accept-group
           .pull-left
             = f.submit "Accept Merge Request", class: "btn btn-create accept_merge_request"
-          - unless @merge_request.disallow_source_branch_removal?
+          - if can_remove_branch?(@merge_request.source_project, @merge_request.source_branch)
             .remove_branch_holder.pull-left
               = label_tag :should_remove_source_branch, class: "checkbox" do
                 = check_box_tag :should_remove_source_branch
diff --git a/app/views/projects/merge_requests/show/_remove_source_branch.html.haml b/app/views/projects/merge_requests/show/_remove_source_branch.html.haml
index f8f8b71f21d..491360af1bb 100644
--- a/app/views/projects/merge_requests/show/_remove_source_branch.html.haml
+++ b/app/views/projects/merge_requests/show/_remove_source_branch.html.haml
@@ -1,7 +1,7 @@
 - if @source_branch.blank?
   Source branch has been removed
 
-- elsif @allowed_to_remove_source_branch && @merge_request.merged?
+- elsif can_remove_branch?(@merge_request.source_project, @merge_request.source_branch) && @merge_request.merged?
   .remove_source_branch_widget
     %p Changes merged into #{@merge_request.target_branch}. You can remove source branch now
     = link_to project_branch_path(@merge_request.source_project, @source_branch), remote: true, method: :delete, class: "btn btn-primary btn-small remove_source_branch" do