Index: sys/netinet/tcp_hpts.c
===================================================================
--- sys/netinet/tcp_hpts.c
+++ sys/netinet/tcp_hpts.c
@@ -1630,7 +1630,7 @@
 	}
 #endif
 	tick_now = tcp_gethptstick(&tv);
-	if (SEQ_GT(tick_now, hpts->p_prevtick)) {
+	if (hpts->p_on_queue_cnt && SEQ_GT(tick_now, hpts->p_prevtick)) {
 		struct timeval res;
 
 		/* Did we really spend a full tick or more in here? */