diff --git a/srcpkgs/xterm/template b/srcpkgs/xterm/template
index 60bfcbf8175..a02eee5ed86 100644
--- a/srcpkgs/xterm/template
+++ b/srcpkgs/xterm/template
@@ -1,7 +1,7 @@
 # Template file for 'xterm'
 pkgname=xterm
 version=373
-revision=1
+revision=2
 build_style=gnu-configure
 configure_args="--enable-wide-chars --enable-88-color --enable-broken-osc
  --enable-256-color --enable-luit --enable-paste64 --enable-ansi-color
@@ -22,6 +22,8 @@ changelog="https://invisible-island.net/xterm/xterm.log.html"
 distfiles="https://invisible-mirror.net/archives/xterm/xterm-${version}.tgz"
 checksum=deb0989473a63908b5a8d44dfeea8301c8710f6ce01fb57ce8c30002375746b6
 
+CFLAGS="-D_DEFAULT_SOURCE -D_XOPEN_SOURCE=700"
+
 post_install() {
 	for f in {u,}xterm.desktop; do
 		vinstall $f 644 usr/share/applications