diff --git a/modules/system/boot/stage-2.nix b/modules/system/boot/stage-2.nix
index c45dc348b66f..db867ab8a28c 100644
--- a/modules/system/boot/stage-2.nix
+++ b/modules/system/boot/stage-2.nix
@@ -49,6 +49,7 @@ let
 
   bootStage2 = pkgs.substituteAll {
     src = ./stage-2-init.sh;
+    shell = "${pkgs.bashInteractive}/bin/bash";
     isExecutable = true;
     inherit kernel;
     inherit (config.boot) devShmSize runSize;