diff --git a/setup-debian.sh b/setup-debian.sh
index 20fcf68..c4ad75a 100644
--- a/setup-debian.sh
+++ b/setup-debian.sh
@@ -26,7 +26,7 @@ sed -i "s/\/home\/$User:/\/home\/$User:\/bin\/bash/g" /etc/passwd
 echo ">>> allow sudo without password: %sudo ALL=(ALL:ALL) NOPASSWD:ALL"
 chmod o+w /etc/sudoers
 # emacs /etc/sudoers
-sed -i "s/%sudo\s+ALL*/%sudo ALL=(ALL:ALL) NOPASSWD:ALL/g" /etc/sudoers
+sed -i "s/%sudo\s\+ALL=(ALL:ALL)\sALL/%sudo\tALL=(ALL:ALL) NOPASSWD:ALL/g" /etc/sudoers
 chmod o-w /etc/sudoers
 
 echo ">>> disallow root login: #PermitRootLogin yes"