diff --git a/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/files/commonconfig-6.12 b/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/files/commonconfig-6.12
index 7ce4e5ebe79..b250aa42ffd 100644
--- a/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/files/commonconfig-6.12
+++ b/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/files/commonconfig-6.12
@@ -863,6 +863,7 @@ CONFIG_SATA_SX4=m
 CONFIG_SATA_VIA=m
 CONFIG_SATA_VITESSE=m
 CONFIG_SCHED_AUTOGROUP=y
+CONFIG_SCHED_CLASS_EXT=y
 CONFIG_SCHED_SMT=y
 CONFIG_SCHED_STACK_END_CHECK=y
 CONFIG_SCSI_3W_9XXX=m