diff --git a/share/man/man9/smr.9 b/share/man/man9/smr.9
index 7b2ed65b436..32ef313c098 100644
--- a/share/man/man9/smr.9
+++ b/share/man/man9/smr.9
@@ -64,7 +64,7 @@
 .Fo smr_synchronize
 .Fa "smr_t smr"
 .Fc
-.Ft bool
+.Ft void
 .Fo smr_wait
 .Fa "smr_t smr"
 .Fa "smr_seq_t goal"
diff --git a/sys/kern/subr_smr.c b/sys/kern/subr_smr.c
index cbbf185fee7..df252000567 100644
--- a/sys/kern/subr_smr.c
+++ b/sys/kern/subr_smr.c
@@ -579,6 +579,7 @@ smr_poll(smr_t smr, smr_seq_t goal, bool wait)
 	 */
 	atomic_thread_fence_acq();
 
+	KASSERT(success || !wait, ("%s: blocking poll failed", __func__));
 	return (success);
 }
 
diff --git a/sys/sys/smr.h b/sys/sys/smr.h
index 1319e2bf465..2b6dbeb998d 100644
--- a/sys/sys/smr.h
+++ b/sys/sys/smr.h
@@ -241,11 +241,11 @@ void smr_destroy(smr_t smr);
 /*
  * Blocking wait for all readers to observe 'goal'.
  */
-static inline bool
+static inline void
 smr_wait(smr_t smr, smr_seq_t goal)
 {
 
-	return (smr_poll(smr, goal, true));
+	(void)smr_poll(smr, goal, true);
 }
 
 /*