diff --git a/sys/netinet/tcp_timer.c b/sys/netinet/tcp_timer.c
index 40ee4d25f484..c5838d333a85 100644
--- a/sys/netinet/tcp_timer.c
+++ b/sys/netinet/tcp_timer.c
@@ -533,7 +533,7 @@ tcp_timer_rexmt(void * xtp)
 	TCPT_RANGESET(tp->t_rxtcur, rexmt,
 		      tp->t_rttmin, TCPTV_REXMTMAX);
 	/*
-	 * Disable rfc1323 if we havn't got any response to
+	 * Disable rfc1323 if we haven't got any response to
 	 * our third SYN to work-around some broken terminal servers
 	 * (most of which have hopefully been retired) that have bad VJ
 	 * header compression code which trashes TCP segments containing