diff --git a/pkgs/development/libraries/libxslt/default.nix b/pkgs/development/libraries/libxslt/default.nix
index a8ed68b088bd..0b7432136144 100644
--- a/pkgs/development/libraries/libxslt/default.nix
+++ b/pkgs/development/libraries/libxslt/default.nix
@@ -50,8 +50,7 @@ stdenv.mkDerivation rec {
     "--without-debug"
     "--without-mem-debug"
     "--without-debugger"
-  ] ++ lib.optionals pythonSupport [
-    "--with-python=${python}"
+    (lib.withFeatureAs pythonSupport "python" python)
   ] ++ lib.optionals (!cryptoSupport) [
     "--without-crypto"
   ];