diff --git a/sys/netinet/tcp_input.c b/sys/netinet/tcp_input.c
--- a/sys/netinet/tcp_input.c
+++ b/sys/netinet/tcp_input.c
@@ -483,6 +483,7 @@
 	/* XXXLAS: EXIT_RECOVERY ? */
 	tp->t_bytes_acked = 0;
 	tp->sackhint.delivered_data = 0;
+	tp->sackhint.prr_delivered = 0;
 	tp->sackhint.prr_out = 0;
 }
 
diff --git a/sys/netinet/tcp_output.c b/sys/netinet/tcp_output.c
--- a/sys/netinet/tcp_output.c
+++ b/sys/netinet/tcp_output.c
@@ -1663,6 +1663,8 @@
 				if (flags & TH_FIN)
 					tp->snd_nxt--;
 			}
+			if (IN_RECOVERY(tp->t_flags))
+				tp->sackhint.prr_out -= len;
 		}
 		SOCKBUF_UNLOCK_ASSERT(&so->so_snd);	/* Check gotos. */
 		switch (error) {