diff --git a/configuration/hosts/samhain/services/thermal/thermal.nix b/configuration/hosts/samhain/services/thermal/thermal.nix
index d58103a3..b645e731 100644
--- a/configuration/hosts/samhain/services/thermal/thermal.nix
+++ b/configuration/hosts/samhain/services/thermal/thermal.nix
@@ -14,8 +14,8 @@
         serviceConfig = {
           RemainAfterExit = "no";
           Type = "simple";
-          ExecStart = "/usr/bin/env bash ${./kaede-thermals.sh} start";
-          ExecStop = "/usr/bin/env bash ${./kaede-thermals.sh} stop";
+          ExecStart = "${pkgs.runtimeShell} ${./kaede-thermals.sh} start";
+          ExecStop = "${pkgs.runtimeShell} ${./kaede-thermals.sh} stop";
           User = "root";
         };
       };
@@ -25,8 +25,8 @@
         serviceConfig = {
           RemainAfterExit = "yes";
           Type = "oneshot";
-          ExecStart = "/usr/bin/env bash ${./kaede-power.sh} start";
-          ExecStop = "/usr/bin/env bash ${./kaede-power.sh} stop";
+          ExecStart = "${pkgs.runtimeShell} ${./kaede-power.sh} start";
+          ExecStop = "${pkgs.runtimeShell} ${./kaede-power.sh} stop";
           User = "root";
         };
       };