diff --git a/data/xdg-desktop-portal-pantheon.service.in b/data/xdg-desktop-portal-pantheon.service.in
index 533e3486..52e3300a 100644
--- a/data/xdg-desktop-portal-pantheon.service.in
+++ b/data/xdg-desktop-portal-pantheon.service.in
@@ -1,5 +1,8 @@
 [Unit]
 Description=Portal service (Pantheon implementation)
+After=graphical-session.target
+Requisite=graphical-session.target
+PartOf=graphical-session.target
 
 [Service]
 Type=dbus