diff --git a/hello.rb b/hello.rb
index 59fb3f2..1862074 100644
--- a/hello.rb
+++ b/hello.rb
@@ -1 +1,3 @@
-puts "Hello, #{ARGV.first}!"
+name = ARGV.first || "World"
+
+puts "Hello, #{name}!"
\ No newline at end of file