diff --git a/meta-oe/recipes-support/nss/nss_3.64.bb b/meta-oe/recipes-support/nss/nss_3.64.bb
index fce5a856ee..d4d7a87338 100644
--- a/meta-oe/recipes-support/nss/nss_3.64.bb
+++ b/meta-oe/recipes-support/nss/nss_3.64.bb
@@ -45,6 +45,8 @@ TDS = "${S}/tentative-dist-staging"
 
 TARGET_CC_ARCH += "${LDFLAGS}"
 
+CFLAGS_append_class-native = " -D_XOPEN_SOURCE "
+
 do_configure_prepend_libc-musl () {
     sed -i -e '/-DHAVE_SYS_CDEFS_H/d' ${S}/nss/lib/dbm/config/config.mk
 }