diff --git a/pkgs/build-support/docker/default.nix b/pkgs/build-support/docker/default.nix
index 8d47f157013..04e393e6af6 100644
--- a/pkgs/build-support/docker/default.nix
+++ b/pkgs/build-support/docker/default.nix
@@ -284,7 +284,7 @@ rec {
   }:
     let
       storePathToLayer = substituteAll
-      { inherit (stdenv) shell;
+      { shell = runtimeShell;
         isExecutable = true;
         src = ./store-path-to-layer.sh;
       };
diff --git a/pkgs/build-support/docker/store-path-to-layer.sh b/pkgs/build-support/docker/store-path-to-layer.sh
index ff814c1f613..813623dd874 100755
--- a/pkgs/build-support/docker/store-path-to-layer.sh
+++ b/pkgs/build-support/docker/store-path-to-layer.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#! @shell@
 
 set -eu