diff --git a/srcpkgs/mlton/template b/srcpkgs/mlton/template
index ac86588d05a..acb5fe677f5 100644
--- a/srcpkgs/mlton/template
+++ b/srcpkgs/mlton/template
@@ -17,6 +17,7 @@ checksum="ec7a5a54deb39c7c0fa746d17767752154e9cb94dbcf3d15b795083b3f0f154b
  da73a393384ac8e1094dc59b1a19cf73f506d0481354ced814cd894a83216272"
 skip_extraction="mllex.patch"
 nocross=yes
+disable_parallel_build=yes
 
 post_extract() {
 	cp "${XBPS_SRCDISTDIR}/${pkgname}-${version}/mllex.patch" .