diff --git a/alpine_install.sh b/alpine_install.sh
index 49de22e..5212854 100755
--- a/alpine_install.sh
+++ b/alpine_install.sh
@@ -83,7 +83,7 @@ printf "|> adding user '$user' to group 'cdrw'...\n" && addgroup "$user" cdrw
 printf "|> adding user '$user' to group 'usb'...\n" && addgroup "$user" usb
 
 printf "|> modifying sudoers...\n"
-sed -i "s/# %wheel ALL=(ALL) ALL/%wheel ALL=(ALL) ALL/" "/etc/sudoers"
+sed -i "s/# %wheel ALL=(ALL:ALL) ALL/%wheel ALL=(ALL:ALL) ALL/" "/etc/sudoers"
 
 printf "|> disabling root login via ssh...\n"
 sed -i "s/DROPBEAR_OPTS.*/DROPBEAR_OPTS=\"-w\"/" "/etc/conf.d/dropbear"