diff --git a/pkgs/by-name/op/open-fprintd/package.nix b/pkgs/by-name/op/open-fprintd/package.nix
index 6ddfed95dd47..d0f61119f0ce 100644
--- a/pkgs/by-name/op/open-fprintd/package.nix
+++ b/pkgs/by-name/op/open-fprintd/package.nix
@@ -49,7 +49,7 @@ python3Packages.buildPythonPackage rec {
   makeWrapperArgs = [ "\${gappsWrapperArgs[@]}" ];
 
   postFixup = ''
-    wrapPythonProgramsIn "$out/lib/open-fprintd" "$out $pythonPath"
+    wrapPythonProgramsIn "$out/lib/open-fprintd" "$out ''${pythonPath[*]}"
   '';
 
   meta = {