diff --git a/app/views/shared/issuable/form/_merge_params.html.haml b/app/views/shared/issuable/form/_merge_params.html.haml
index 3c9be824ac4efcb98a79f82dddff6b8b7a57d6b9..1df881e410231a920bb62bd274f35694d0bca9be 100644
--- a/app/views/shared/issuable/form/_merge_params.html.haml
+++ b/app/views/shared/issuable/form/_merge_params.html.haml
@@ -10,7 +10,8 @@
 .form-group.row
   .col-sm-10.offset-sm-2
     - if issuable.can_remove_source_branch?(current_user)
-      = label_tag 'merge_request[force_remove_source_branch]' do
-        = hidden_field_tag 'merge_request[force_remove_source_branch]', '0', id: nil
-        = check_box_tag 'merge_request[force_remove_source_branch]', '1', issuable.force_remove_source_branch?
-        Remove source branch when merge request is accepted.
+      .form-check
+        = label_tag 'merge_request[force_remove_source_branch]' do
+          = hidden_field_tag 'merge_request[force_remove_source_branch]', '0', id: nil
+          = check_box_tag 'merge_request[force_remove_source_branch]', '1', issuable.force_remove_source_branch?
+          Remove source branch when merge request is accepted.