diff --git a/sys/netinet/tcp_log_buf.c b/sys/netinet/tcp_log_buf.c
--- a/sys/netinet/tcp_log_buf.c
+++ b/sys/netinet/tcp_log_buf.c
@@ -2442,7 +2442,7 @@
 	if (reason != NULL)
 		strlcpy(entry->tldl_reason, reason, TCP_LOG_REASON_LEN);
 	else
-		strlcpy(entry->tldl_reason, "UNKNOWN", TCP_LOG_ID_LEN);
+		strlcpy(entry->tldl_reason, "UNKNOWN", TCP_LOG_REASON_LEN);
 	entry->tldl_ie = inp->inp_inc.inc_ie;
 	if (inp->inp_inc.inc_flags & INC_ISIPV6)
 		entry->tldl_af = AF_INET6;
@@ -2532,7 +2532,7 @@
 	if (reason != NULL)
 		strlcpy(entry->tldl_reason, reason, TCP_LOG_REASON_LEN);
 	else
-		strlcpy(entry->tldl_reason, "UNKNOWN", TCP_LOG_ID_LEN);
+		strlcpy(entry->tldl_reason, "UNKNOWN", TCP_LOG_REASON_LEN);
 	entry->tldl_ie = tln->tln_ie;
 	entry->tldl_entries = tln->tln_entries;
 	entry->tldl_count = tln->tln_count;