--- a/taskcluster/docker/firefox-snap/snapcraft.yaml.in
+++ b/taskcluster/docker/firefox-snap/snapcraft.yaml.in
@@ -6,16 +6,17 @@ confinement: strict
 grade: stable
 
 apps:
   firefox:
     command: desktop-launch $SNAP/firefox
     desktop: distribution/firefox.desktop
     environment:
       DISABLE_WAYLAND: 1
+      HOME: "$SNAP_USER_COMMON"
     plugs:
       - avahi-observe
       - browser-sandbox
       - camera
       - cups-control
       - desktop
       - desktop-legacy
       - gsettings