diff --git a/nte-drv.nix b/nte-drv.nix
index b7581ab..65cafa0 100644
--- a/nte-drv.nix
+++ b/nte-drv.nix
@@ -28,7 +28,7 @@ in pkgs.stdenv.mkDerivation {
 
     ${concatStrings (forEach extraFiles
         (extraFile: let
-          isInSubdir = (match ".+/.+" extraFile.destination) != null;
+          isInSubdir = (match ".+/.*" extraFile.destination) != null;
           outDir = concatStrings (init (splitString "/" extraFile.destination));
           outPath = normalizePath "$out/${extraFile.destination}";
         in /*sh*/''