diff --git a/scripts/system/etc/gdm3/PostSession/Default b/scripts/system/etc/gdm3/PostSession/Default
index 9292367d7..bec2d4b1e 100755
--- a/scripts/system/etc/gdm3/PostSession/Default
+++ b/scripts/system/etc/gdm3/PostSession/Default
@@ -20,7 +20,7 @@ passwd -d $USER
 systemctl stop user@1000.service
 
 # Make sure the mountpoints are free
-kill $(lsof -t "$HOME" /mnt) $(ps --no-headers -u student -o pid)
+kill $(lsof -t "$HOME" /mnt) $(ps --no-headers -u "$USER" -o pid)
 umount "$HOME" /mnt
 umount /dev/disk/by-partlabel/01-home ||:
 wipefs -a /dev/disk/by-partlabel/01-tmp-home