diff --git a/pkgs/by-name/ki/kicad/package.nix b/pkgs/by-name/ki/kicad/package.nix
index 80b1acb7b60e..11e14c5d7ed7 100644
--- a/pkgs/by-name/ki/kicad/package.nix
+++ b/pkgs/by-name/ki/kicad/package.nix
@@ -283,7 +283,7 @@ stdenv.mkDerivation rec {
     (concatStringsSep "\n" (flatten [
       "runHook preInstall"
 
-      (optionalString withScripting "buildPythonPath \"${base} $pythonPath\" \n")
+      (optionalString withScripting ''buildPythonPath "${base} ''${pythonPath[*]}"'')
 
       # wrap each of the directly usable tools
       (map (