diff --git a/aiueo.rb b/aiueo.rb
index b4a4428..c21a2b1 100755
--- a/aiueo.rb
+++ b/aiueo.rb
@@ -6,11 +6,11 @@
 
 
 print"30秒間ストップウォッチ!\n"
-nokori = 3
+nokori = 30
 
 while  nokori>=0
   sleep 1
-  printf nokori
+  print nokori
   nokori = nokori - 1
 end
 print"終了---\n"