diff --git a/conf/intel/portage/package.mask/00-sabayon.package.mask b/conf/intel/portage/package.mask/00-sabayon.package.mask
index f4d05262..9c63330f 100644
--- a/conf/intel/portage/package.mask/00-sabayon.package.mask
+++ b/conf/intel/portage/package.mask/00-sabayon.package.mask
@@ -224,3 +224,6 @@ media-sound/mixxx::gentoo
 
 # temp mask for Perl bump
 >sys-kernel/linux-headers-4.3
+
+# 2016-11-10 Ettore Di Giacinto:  https://bugs.gentoo.org/show_bug.cgi?id=575498
+>sys-libs/glibc-2.21-r2