diff --git a/lib/gitlab/ee_compat_check.rb b/lib/gitlab/ee_compat_check.rb
index 6f8d2ca322025e55a185b76b4cf5be64aa68a977..fd9fd56510f42463f83531c476978507fb390e65 100644
--- a/lib/gitlab/ee_compat_check.rb
+++ b/lib/gitlab/ee_compat_check.rb
@@ -111,7 +111,7 @@ module Gitlab
       output, status = Gitlab::Popen.popen(%w[git format-patch FETCH_HEAD --stdout])
       throw(:halt_check, :ko) unless status.zero?
 
-      File.open(filepath, 'w+') { |f| f.write(output) }
+      File.write(filepath, output)
       throw(:halt_check, :ko) unless File.exist?(filepath)
     end