diff --git a/etc/systemd/system/steamos-automount@.service b/etc/systemd/system/steamos-automount@.service
index dd700da..152e231 100644
--- a/etc/systemd/system/steamos-automount@.service
+++ b/etc/systemd/system/steamos-automount@.service
@@ -14,6 +14,7 @@ Description=Mount removable drive %i and notify Steam
 [Service]
 Type=oneshot
 RemainAfterExit=true
+EnvironmentFile=/etc/default/steamos-btrfs
 ExecStart=/usr/sbin/steamos-automount add %i
 ExecStop=/usr/sbin/steamos-automount remove %i
 ExecReload=/usr/sbin/steamos-automount retrigger %i
diff --git a/usr/lib/hwsupport/format-device.sh b/usr/lib/hwsupport/format-device.sh
index 79afec7..43ea933 100755
--- a/usr/lib/hwsupport/format-device.sh
+++ b/usr/lib/hwsupport/format-device.sh
@@ -3,6 +3,8 @@
 set -e
 exec &> >(tee | logger -t steamos-format-device)
 
+source /etc/default/steamos-btrfs
+
 RUN_VALIDATION=1
 EXTENDED_OPTIONS="nodiscard"
 # default owner for the new filesystem