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-rw-r--r--lib/yahns/socket_helper.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/yahns/socket_helper.rb b/lib/yahns/socket_helper.rb
index c786801..3fa5ab6 100644
--- a/lib/yahns/socket_helper.rb
+++ b/lib/yahns/socket_helper.rb
@@ -1,6 +1,8 @@
 # -*- encoding: binary -*-
 # Copyright (C) 2013-2015 all contributors <yahns-public@yhbt.net>
 # License: GPLv3 or later (https://www.gnu.org/licenses/gpl-3.0.txt)
+# frozen_string_literal: true
+
 # this is only meant for Yahns::Server
 module Yahns::SocketHelper # :nodoc: