diff --git a/srcpkgs/unison/template b/srcpkgs/unison/template
index 0f561b50bc..f93ac3aec7 100644
--- a/srcpkgs/unison/template
+++ b/srcpkgs/unison/template
@@ -1,7 +1,7 @@
 # Template file for 'unison'
 pkgname="unison"
 version=2.51.2
-revision=4
+revision=5
 hostmakedepends="ocaml"
 short_desc="A file-synchronization tool"
 maintainer="allan <mail@may.mooo.com>"
@@ -10,7 +10,6 @@ homepage="http://www.cis.upenn.edu/~bcpierce/unison/"
 distfiles="https://github.com/bcpierce00/unison/archive/v${version}.tar.gz"
 checksum=a2efcbeab651be6df69cc9b253011a07955ecb91fb407a219719451197849d5e
 nocross=yes
-export OCAMLPARAM="safe-string=0,_"
 
 do_build() {
 	CFLAGS= make UISTYLE=text DEBUGGING=false THREADS=true