diff --git a/srcpkgs/unison/template b/srcpkgs/unison/template
index 8a5f06e0b6f..6f9daf259f2 100644
--- a/srcpkgs/unison/template
+++ b/srcpkgs/unison/template
@@ -1,7 +1,7 @@
 # Template file for 'unison'
 pkgname=unison
 version=2.53.4
-revision=1
+revision=2
 hostmakedepends="ocaml"
 short_desc="File-synchronization tool"
 maintainer="Andrew J. Hesford <ajh@sideband.org>"
@@ -12,7 +12,8 @@ checksum=d19e4293013581dbc4d149aef89b34c76221efcbd873c7aa5193de489addb85a
 nocross="OCaml does not cross compile"
 
 do_build() {
-	CFLAGS= make ${makejobs} DEBUGGING=false THREADS=true
+	command -v ocamlc.opt >/dev/null && NATIVE=true || NATIVE=false
+	CFLAGS= make ${makejobs} DEBUGGING=false THREADS=true NATIVE=$native
 	CFLAGS= make ${makejobs} -C man
 }