diff --git a/sbin/nfsd/nfsd.c b/sbin/nfsd/nfsd.c
index 5887af8af7f..96249cfd973 100644
--- a/sbin/nfsd/nfsd.c
+++ b/sbin/nfsd/nfsd.c
@@ -229,6 +229,7 @@ main(argc, argv, envp)
 		case '?':
 			usage();
 		};
+	if(argc) udpflag = 1;
 	argv += optind;
 	argc -= optind;
 
diff --git a/usr.sbin/nfsd/nfsd.c b/usr.sbin/nfsd/nfsd.c
index 5887af8af7f..96249cfd973 100644
--- a/usr.sbin/nfsd/nfsd.c
+++ b/usr.sbin/nfsd/nfsd.c
@@ -229,6 +229,7 @@ main(argc, argv, envp)
 		case '?':
 			usage();
 		};
+	if(argc) udpflag = 1;
 	argv += optind;
 	argc -= optind;