diff --git a/pkgs/nix-portable/default.nix b/pkgs/nix-portable/default.nix
index 5a6f9dbc..11a9c483 100644
--- a/pkgs/nix-portable/default.nix
+++ b/pkgs/nix-portable/default.nix
@@ -576,8 +576,7 @@ let
 
 
     ### set PATH
-    # restore original PATH and append busybox
-    export PATH="\$PATH_OLD:\$dir/busybox/bin"
+    export PATH="\$dir/busybox/bin"
 
     ### install programs via nix
     ${concatMapStringsSep "\n" installDynamic bootstrapPrograms}