diff --git a/pkgs/by-name/xe/xen/package.nix b/pkgs/by-name/xe/xen/package.nix
index 03c634a84b7a..f68206899ec6 100644
--- a/pkgs/by-name/xe/xen/package.nix
+++ b/pkgs/by-name/xe/xen/package.nix
@@ -317,7 +317,7 @@ stdenv.mkDerivation (finalAttrs: {
     # We also need to wrap pygrub, which lies in $out/libexec/xen/bin.
     ''
       wrapPythonPrograms
-      wrapPythonProgramsIn "$out/libexec/xen/bin" "$out $pythonPath"
+      wrapPythonProgramsIn "$out/libexec/xen/bin" "$out ''${pythonPath[*]}"
     '';
 
   postFixup = ''