diff --git a/sys/netpfil/ipfw/nat64/nat64lsn.c b/sys/netpfil/ipfw/nat64/nat64lsn.c
index 90c27cabdf2..9616ecb29a0 100644
--- a/sys/netpfil/ipfw/nat64/nat64lsn.c
+++ b/sys/netpfil/ipfw/nat64/nat64lsn.c
@@ -969,7 +969,7 @@ nat64lsn_maintain_hosts(struct nat64lsn_cfg *cfg)
 #endif
 
 /*
- * This procedure is used to perform various maintance
+ * This procedure is used to perform various maintenance
  * on dynamic hash list. Currently it is called every 4 seconds.
  */
 static void