diff --git a/pkgs/build-support/docker/default.nix b/pkgs/build-support/docker/default.nix
index 344f1abc8b26..11945e7b6f72 100644
--- a/pkgs/build-support/docker/default.nix
+++ b/pkgs/build-support/docker/default.nix
@@ -289,7 +289,7 @@ 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 4cf338b9b252..ab956c819040 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