diff --git a/extensions/ebt_nat.c b/extensions/ebt_nat.c
index c627714..8c682fb 100644
--- a/extensions/ebt_nat.c
+++ b/extensions/ebt_nat.c
@@ -157,7 +157,7 @@
 	struct ebt_nat_info *natinfo = (struct ebt_nat_info *)target->data;
 
 	printf("--to-src ");
-	printf("%s", ether_ntoa((struct ether_addr *)natinfo->mac));
+	print_mac(natinfo->mac);
 	printf(" --snat-target %s", TARGET_NAME(natinfo->target));
 }
 
@@ -167,7 +167,7 @@
 	struct ebt_nat_info *natinfo = (struct ebt_nat_info *)target->data;
 
 	printf("--to-dst ");
-	printf("%s", ether_ntoa((struct ether_addr *)natinfo->mac));
+	print_mac(natinfo->mac);
 	printf(" --dnat-target %s", TARGET_NAME(natinfo->target));
 }
 
@@ -177,7 +177,6 @@
 	struct ebt_nat_info *natinfo1 = (struct ebt_nat_info *)t1->data;
 	struct ebt_nat_info *natinfo2 = (struct ebt_nat_info *)t2->data;
 
-
 	return !memcmp(natinfo1->mac, natinfo2->mac, sizeof(natinfo1->mac)) &&
 	   natinfo1->target == natinfo2->target;
 }