diff --git a/qubes/corridor.d/95-qubes.conf b/qubes/corridor.d/95-qubes.conf
index a780a3c..eec8adf 100644
--- a/qubes/corridor.d/95-qubes.conf
+++ b/qubes/corridor.d/95-qubes.conf
@@ -1,3 +1,5 @@
+test -e /usr/share/qubes/marker-vm || return 0
+
 RELAYS_STATE=/rw/corridor_relays
 
 SNAT="