diff --git a/vm.py b/vm.py
index cfad898..c673d03 100755
--- a/vm.py
+++ b/vm.py
@@ -242,7 +242,7 @@ IP:         {0.ip}
 Username:   {0.user}
 Password:   {0.password}'''.format(instance))
 
-    subprocess.call(['ping', '-c', '1', '-W', '240', instance.ip])
+    subprocess.call(['ping', '-n', '-c', '1', '-w', '240', instance.ip])
 
 
 def cmd_iplist(args):