diff --git a/hosts/common/optional/ephemeral-btrfs.nix b/hosts/common/optional/ephemeral-btrfs.nix
index c4f15dfe..de9834f0 100644
--- a/hosts/common/optional/ephemeral-btrfs.nix
+++ b/hosts/common/optional/ephemeral-btrfs.nix
@@ -33,10 +33,10 @@ in
       description = "Rollback btrfs rootfs";
       wantedBy = [ "initrd.target" ];
       requires = [
-        "dev-disk-by\x2dlabel-${hostname}.device"
+        "dev-disk-by\\x2dlabel-${hostname}.device"
       ];
       after = [
-        "dev-disk-by\x2dlabel-${hostname}.device"
+        "dev-disk-by\\x2dlabel-${hostname}.device"
         "systemd-cryptsetup@${hostname}.service"
       ];
       before = [ "sysroot.mount" ];