diff --git a/libexec/tftpd/tftpd.c b/libexec/tftpd/tftpd.c
index 8740fd129e7..8b32f24780e 100644
--- a/libexec/tftpd/tftpd.c
+++ b/libexec/tftpd/tftpd.c
@@ -265,6 +265,7 @@ main(argc, argv)
 		}
 		chdir( "/" );
 		setuid(nobody->pw_uid);
+		setgroups(1, &nobody->pw_gid);
 	}
 
 	from.sin_family = AF_INET;