diff --git a/pkgs/by-name/gn/gnome-tweaks/package.nix b/pkgs/by-name/gn/gnome-tweaks/package.nix
index 3e4afc36e2f1..1a2f81b2bebb 100644
--- a/pkgs/by-name/gn/gnome-tweaks/package.nix
+++ b/pkgs/by-name/gn/gnome-tweaks/package.nix
@@ -79,7 +79,7 @@ python3Packages.buildPythonApplication rec {
   '';
 
   postFixup = ''
-    wrapPythonProgramsIn "$out/libexec" "$out $pythonPath"
+    wrapPythonProgramsIn "$out/libexec" "$out ''${pythonPath[*]}"
   '';
 
   passthru = {