diff --git a/pkgs/applications/system/coolercontrol/coolercontrold.nix b/pkgs/applications/system/coolercontrol/coolercontrold.nix
index 75142ec80f49..e185235f4906 100644
--- a/pkgs/applications/system/coolercontrol/coolercontrold.nix
+++ b/pkgs/applications/system/coolercontrol/coolercontrold.nix
@@ -52,7 +52,7 @@ rustPlatform.buildRustPackage {
   postFixup = ''
     addDriverRunpath "$out/bin/coolercontrold"
 
-    buildPythonPath "$pythonPath"
+    buildPythonPath "''${pythonPath[*]}"
     wrapProgram "$out/bin/coolercontrold" \
       --prefix PATH : $program_PATH \
       --prefix PYTHONPATH : $program_PYTHONPATH