diff --git a/scripts/config.sh b/scripts/config.sh
index b1719da..36bd686 100755
--- a/scripts/config.sh
+++ b/scripts/config.sh
@@ -28,6 +28,8 @@ scripts/config -m NET_SCH_FQ_CODEL \
             -e DEFAULT_FQ \
             --set-str DEFAULT_NET_SCH fq
 
+scripts/config -e SCHED_CLASS_EXT
+
 scripts/config -e LRU_GEN -e LRU_GEN_ENABLED -d LRU_GEN_STATS
 
 scripts/config -d TRANSPARENT_HUGEPAGE_MADVISE -e TRANSPARENT_HUGEPAGE_ALWAYS