diff --git a/srcpkgs/xchm/template b/srcpkgs/xchm/template
index 02900b43385..66b8156e431 100644
--- a/srcpkgs/xchm/template
+++ b/srcpkgs/xchm/template
@@ -1,7 +1,7 @@
 # Template file for 'xchm'
 pkgname=xchm
 version=1.34
-revision=1
+revision=2
 build_style=gnu-configure
 configure_args="--with-wx-config=wx-config-gtk3"
 hostmakedepends="automake gettext-devel tar"
@@ -13,6 +13,8 @@ homepage="https://github.com/rzvncj/xCHM"
 distfiles="https://github.com/rzvncj/xCHM/releases/download/${version}/xchm-${version}.tar.gz"
 checksum=b07971ddb02992da462060fb638c051318f389aef822485646aa7fbe245a0d93
 
+CXXFLAGS="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64"
+
 pre_configure() {
 	autoreconf -fi
 }