diff --git a/pkgs/vesc-tool/tool.nix b/pkgs/vesc-tool/tool.nix
index 3cb591d..7b70eca 100644
--- a/pkgs/vesc-tool/tool.nix
+++ b/pkgs/vesc-tool/tool.nix
@@ -34,9 +34,7 @@ stdenv.mkDerivation {
   dontConfigure = true;
 
   buildPhase = ''
-    for f in ${vesc-firmware}/*; do
-      ln -s "$f" res/firmwares/
-    done
+    cp -r ${vesc-firmware}/* res/firmwares/
     qmake -config release "CONFIG += release_lin build_platinum"
     make clean
     make -j $NIX_BUILD_CORES