diff --git a/sys-config/ltoize/files/package.cflags/ltoworkarounds.conf b/sys-config/ltoize/files/package.cflags/ltoworkarounds.conf
index 9e48afa2..a87eefe0 100644
--- a/sys-config/ltoize/files/package.cflags/ltoworkarounds.conf
+++ b/sys-config/ltoize/files/package.cflags/ltoworkarounds.conf
@@ -89,6 +89,7 @@ dev-db/firebird *FLAGS=-flto*
 app-office/libreoffice "has firebird ${IUSE//+} && use firebird && FlagSubAllFlags -flto*"
 net-misc/nx *FLAGS-=-flto* # ODR violation during compilation
 x11-base/xorg-server *FLAGS-=-flto* # linking error during compilation
+sys-cluster/glusterfs *FLAGS=-flto* # undefined reference to `glfs_subvol_done'
 
 # BEGIN: LTO not recommended
 # Packages which can be built with LTO but leads to problems/crashes/segfaults