diff --git a/meta-oe/recipes-graphics/xorg-app/xterm_373.bb b/meta-oe/recipes-graphics/xorg-app/xterm_373.bb
index 7e36f475c4..bc555cbcd9 100644
--- a/meta-oe/recipes-graphics/xorg-app/xterm_373.bb
+++ b/meta-oe/recipes-graphics/xorg-app/xterm_373.bb
@@ -27,6 +27,8 @@ EXTRA_OECONF = " --x-includes=${STAGING_INCDIR} \
 
 B = "${S}"
 
+CFLAGS += "-D_GNU_SOURCE"
+
 do_configure() {
     gnu-configize --force
     sed -e "s%/usr/contrib/X11R6%${STAGING_LIBDIR}%g" -i configure