diff --git a/srcpkgs/zsync/template b/srcpkgs/zsync/template
index 8d0a710769b..693089f0dc6 100644
--- a/srcpkgs/zsync/template
+++ b/srcpkgs/zsync/template
@@ -1,16 +1,16 @@
 # Template file for 'zsync'
 pkgname=zsync
 version=0.6.2
-revision=3
+revision=4
 build_style=gnu-configure
+checkdepends="perl"
 short_desc="Client-side implementation of the rsync algorithm"
 maintainer="Orphaned <orphan@voidlinux.org>"
-license="Artistic"
+license="Artistic-2.0"
 homepage="http://zsync.moria.org.uk/"
 distfiles="http://zsync.moria.org.uk/download/zsync-$version.tar.bz2"
 checksum=0b9d53433387aa4f04634a6c63a5efa8203070f2298af72a705f9be3dda65af2
 
 post_extract() {
-	sed -i "11a#include <sys/types.h>" libzsync/sha1.h
+	vsed -i "11a#include <sys/types.h>" libzsync/sha1.h
 }
-