diff --git a/lib/getoptlong.rb b/lib/getoptlong.rb
index c0ba5399b7..348b7851cf 100644
--- a/lib/getoptlong.rb
+++ b/lib/getoptlong.rb
@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 #
 # GetoptLong for Ruby
 #