diff --git a/pkgs/by-name/hy/hypnotix/package.nix b/pkgs/by-name/hy/hypnotix/package.nix
index 19f11b1d33eb..479326f6f0c3 100644
--- a/pkgs/by-name/hy/hypnotix/package.nix
+++ b/pkgs/by-name/hy/hypnotix/package.nix
@@ -76,7 +76,7 @@ stdenv.mkDerivation rec {
   '';
 
   preFixup = ''
-    buildPythonPath "$out $pythonPath"
+    buildPythonPath "$out ''${pythonPath[*]}"
 
     # yt-dlp is needed for mpv to play YouTube channels.
     wrapProgram $out/bin/hypnotix \