diff --git a/services/ddm-sysuser.conf.in b/services/ddm-sysuser.conf.in
index 4bf82a4..6dc4b74 100644
--- a/services/ddm-sysuser.conf.in
+++ b/services/ddm-sysuser.conf.in
@@ -2,5 +2,6 @@
 u     dde -  "DDM Greeter Account" ${STATE_DIR}   -
 g     dde -
 m     dde dde
+m     dde seat
 m     dde video
 m     dde render