diff --git a/dashboard/config/openbsd-syzkaller.mp b/dashboard/config/openbsd-syzkaller.mp
index 76e4ec3d822..9b9a2bcdfa4 100644
--- a/dashboard/config/openbsd-syzkaller.mp
+++ b/dashboard/config/openbsd-syzkaller.mp
@@ -4,4 +4,5 @@ pseudo-device kcov 1
 
 option LOCKF_DIAGNOSTIC
 option WITNESS
+option WITNESS_LOCKTRACE
 option WITNESS_WATCH