diff --git a/srcpkgs/xar/template b/srcpkgs/xar/template
index be3d642259..dc293255cf 100644
--- a/srcpkgs/xar/template
+++ b/srcpkgs/xar/template
@@ -3,6 +3,7 @@ pkgname=xar
 version=1.5.2
 revision=5
 build_style=gnu-configure
+configure_args="ac_cv_sizeof_uid_t=4"
 makedepends="zlib-devel bzip2-devel e2fsprogs-devel acl-devel libxml2-devel libressl-devel"
 short_desc="eXtensible ARchiver format"
 maintainer="Juan RP <xtraeme@gmail.com>"