diff --git a/flavours/user.flavour/install.sh b/flavours/user.flavour/install.sh
index 6012312..ae2fdc6 100755
--- a/flavours/user.flavour/install.sh
+++ b/flavours/user.flavour/install.sh
@@ -20,7 +20,7 @@ else
         echo -n "~> Do you want to add $name to sudoers? (Y/n) "
         read answer
         if [ "$answer" == "y" ] || [ "$answer" == "Y" ]; then
-            usermod -a -G sudo $name
+            arch-chroot /mnt usermod -a -G sudo $name
         fi
     fi