diff --git a/bookwyrm.nix b/bookwyrm.nix
index 650a33b..dfec431 100644
--- a/bookwyrm.nix
+++ b/bookwyrm.nix
@@ -5,7 +5,6 @@
 } :
 
 with builtins ;
-with pkgs ;
 with pkgs . kernelmaft . python ;
 with pkgs . python311Packages ;
 with stdenv ;
@@ -100,7 +99,7 @@ mkDerivation {
 		# Executables
 
 		cat <<- EOF > $out/bin/bookwyrm
-			#!${bash}/bin/sh
+			#!/run/current-system/sw/bin/sh
 
 			export PYTHONPATH="$out/lib/python3.11/site-packages"
 
diff --git a/nixos-module.nix b/nixos-module.nix
index 88e7329..b90ef12 100644
--- a/nixos-module.nix
+++ b/nixos-module.nix
@@ -1,12 +1,11 @@
 { pkgs , ... } :
 
-with pkgs ;
-with pkgs . kernelmaft ;
-
 {
 	nixpkgs = {
 		overlays = [
 			( self : super :
+				with pkgs ;
+
 				{
 					kernelmaft = {
 
@@ -55,13 +54,13 @@ with pkgs . kernelmaft ;
 
 	systemd = {
 		units = {
-			"bookwyrm.service" = {
+			bookwyrm = {
 				text = ''
 					[Unit]
 					After=network.target
 
 					[Service]
-					ExecStart=${bookwyrm}/bin/bookwyrm
+					ExecStart=$out/bin/bookwyrm
 					WorkingDirectory=/var/lib/bookwyrm
 				'' ;
 			} ;