diff --git a/misc_systemd_units/gdm.service b/misc_systemd_units/gdm.service
index 6750482..e454a45 100644
--- a/misc_systemd_units/gdm.service
+++ b/misc_systemd_units/gdm.service
@@ -2,7 +2,7 @@
 Description=GDM
 Wants=nvidia.service
 After=nvidia.service
-!ConditionPathExists=/node/tags/lightdm
+ConditionPathExists=!/node/tags/lightdm
 
 [Service]
 ExecStart=/usr/sbin/gdm