diff --git a/flake.nix b/flake.nix
index 63cd862..1daa87e 100644
--- a/flake.nix
+++ b/flake.nix
@@ -144,24 +144,25 @@
                 zfs
                 gnugrep
                 gawk
+                coreutils
               ];
-              text = ''
-                #!/bin/sh
-                zfs get mounted | grep yes | awk '{print $1}' | while read -r i; do zfs get mountpoint "$i" | awk 'FNR==2 {print $3}'; done
-              '';
+              text =
+                let
+                  lib = nixpkgs.lib;
+                in
+                ''
+                  #!/bin/sh
+                  zfs get mounted | grep yes | awk '{print $1}' | while read -r i; do zfs get mountpoint "$i" | awk 'FNR==2 {print $3}'; done | grep -c '${lib.strings.concatStringsSep "\|" dirs}' | grep -Fq ${toString (lib.length dirs)}
+                '';
             };
+
           in
           {
             unitConfig.Wants = "zfs.target";
             serviceConfig = {
               Type = "oneshot";
               RemainAfterExit = true;
-              ExecStart =
-                let
-                  lib = nixpkgs.lib;
-                  contains_cmd = "${lib.getExe pkgs.gnugrep} '${lib.strings.concatStringsSep "\|" dirs}' | ${pkgs.coreutils}/bin/wc -l | ${lib.getExe pkgs.gnugrep} -q ${toString (lib.length dirs)}";
-                in
-                "${lib.getExe pkgs.bash} -c \"${lib.getExe zfslistmounted} | ${contains_cmd}\"";
+              ExecStart = nixpkgs.lib.getExe zfslistmounted;
             };
           };