diff --git a/sys/netinet/sctputil.c b/sys/netinet/sctputil.c
index eda81df766c3..7a7450f2720a 100644
--- a/sys/netinet/sctputil.c
+++ b/sys/netinet/sctputil.c
@@ -1730,7 +1730,7 @@ sctp_timeout_handler(void *t)
 #endif
 
 	/* sanity checks... */
-	KASSERT(tmr->self == tmr,
+	KASSERT(tmr->self == NULL || tmr->self == tmr,
 	    ("sctp_timeout_handler: tmr->self corrupted"));
 	KASSERT(SCTP_IS_TIMER_TYPE_VALID(tmr->type),
 	    ("sctp_timeout_handler: invalid timer type %d", tmr->type));