diff --git a/misc_systemd_units/gdm.service b/misc_systemd_units/gdm.service
index f4f34174..67504824 100644
--- a/misc_systemd_units/gdm.service
+++ b/misc_systemd_units/gdm.service
@@ -2,6 +2,7 @@
 Description=GDM
 Wants=nvidia.service
 After=nvidia.service
+!ConditionPathExists=/node/tags/lightdm
 
 [Service]
 ExecStart=/usr/sbin/gdm