diff --git a/nixos/modules/nixos/services/zfs-nightly-snap/functions.sh b/nixos/modules/nixos/services/zfs-nightly-snap/functions.sh
index 54f7cfd..e5b87bf 100644
--- a/nixos/modules/nixos/services/zfs-nightly-snap/functions.sh
+++ b/nixos/modules/nixos/services/zfs-nightly-snap/functions.sh
@@ -1,5 +1,3 @@
-#!/usr/bin/env bash
-
 # functions sourced from: https://github.com/Jip-Hop/zfs-backup-snapshots
 function mount_dataset() {
   mkdir -p "$BACKUP_DIRECTORY"