diff --git a/srcpkgs/glibc/template b/srcpkgs/glibc/template
index a298eed628f..68523cfc77a 100644
--- a/srcpkgs/glibc/template
+++ b/srcpkgs/glibc/template
@@ -71,6 +71,8 @@ do_configure() {
 
 	# Disable SSP
 	export CFLAGS="${CFLAGS/-fstack-protector-strong/}"
+	# Disable FORTIFY_SOURCE
+	export CPPFLAGS="${CPPFLAGS/-D_FORTIFY_SOURCE=?/}"
 
 	SHELL=/bin/bash ../configure ${configure_args} \
 		--bindir=/usr/bin --sbindir=/usr/sbin \