diff --git a/sys/kern/kern_synch.c b/sys/kern/kern_synch.c
index 9501ba2ba07d..ad10dc786371 100644
--- a/sys/kern/kern_synch.c
+++ b/sys/kern/kern_synch.c
@@ -108,17 +108,6 @@ static void	loadav(void *arg);
 SDT_PROVIDER_DECLARE(sched);
 SDT_PROBE_DEFINE(sched, , , preempt);
 
-/*
- * These probes reference Solaris features that are not implemented in FreeBSD.
- * Create the probes anyway for compatibility with existing D scripts; they'll
- * just never fire.
- */
-SDT_PROBE_DEFINE(sched, , , cpucaps__sleep);
-SDT_PROBE_DEFINE(sched, , , cpucaps__wakeup);
-SDT_PROBE_DEFINE(sched, , , schedctl__nopreempt);
-SDT_PROBE_DEFINE(sched, , , schedctl__preempt);
-SDT_PROBE_DEFINE(sched, , , schedctl__yield);
-
 static void
 sleepinit(void *unused)
 {