diff --git a/usr.bin/sockstat/main.c b/usr.bin/sockstat/main.c
--- a/usr.bin/sockstat/main.c
+++ b/usr.bin/sockstat/main.c
@@ -1196,7 +1196,9 @@
 	first = true;
 
 	len = strlen(s->protoname);
-	if (s->vflag & (INP_IPV4 | INP_IPV6))
+	if (s->vflag & INP_IPV4)
+		len += 1;
+	if (s->vflag & INP_IPV6)
 		len += 1;
 	cw->proto = MAX(cw->proto, len);