diff -ur src.old/sys/kern/subr_witness.c src/sys/kern/subr_witness.c
--- src.old/sys/kern/subr_witness.c	Fri Aug 25 15:02:40 2006
+++ src/sys/kern/subr_witness.c	Sat Aug 26 11:10:43 2006
@@ -385,7 +385,7 @@
 	{ "zstty", &lock_class_mtx_spin },
 	{ "ng_node", &lock_class_mtx_spin },
 	{ "ng_worklist", &lock_class_mtx_spin },
-	{ "taskqueue_fast", &lock_class_mtx_spin },
+	{ "fast_taskqueue", &lock_class_mtx_spin },
 	{ "intr table", &lock_class_mtx_spin },
 	{ "sleepq chain", &lock_class_mtx_spin },
 	{ "sched lock", &lock_class_mtx_spin },