diff --git a/pkgs/nix-portable/default.nix b/pkgs/nix-portable/default.nix
index 4086069f..10b35104 100644
--- a/pkgs/nix-portable/default.nix
+++ b/pkgs/nix-portable/default.nix
@@ -375,7 +375,6 @@ let
 
     ### select container runtime
     debug "figuring out which runtime to use"
-    [ -z "\$NP_BWRAP" ] && NP_BWRAP=\$(PATH="\$PATH_OLD:\$PATH" which bwrap 2>/dev/null) || true
     [ -z "\$NP_BWRAP" ] && NP_BWRAP=\$dir/bin/bwrap
     debug "bwrap executable: \$NP_BWRAP"
     [ -z "\$NP_NIX" ] && NP_NIX=\$dir/bin/nix