diff --git a/sys/arm64/conf/NOTES b/sys/arm64/conf/NOTES
index 5f29112d535..e773253da6d 100644
--- a/sys/arm64/conf/NOTES
+++ b/sys/arm64/conf/NOTES
@@ -16,6 +16,7 @@
 # kernel modules.
 #
 options 	KDTRACE_HOOKS
+options 	KDTRACE_MIB_SDT
 
 #
 # Most of the following is copied from ARM64 GENERIC.