diff --git a/include/arpa/ftp.h b/include/arpa/ftp.h
index 4041aebaf806aa940b24eb8a89f3c7e0fb358a5b..fb0a46f2b879423290365cda85892a587f89929b 100644
--- a/include/arpa/ftp.h
+++ b/include/arpa/ftp.h
@@ -1,5 +1,5 @@
-#ifndef _ARPA_FTP_H_
-#define _ARPA_FTP_H_
+#ifndef _ARPA_FTP_H
+#define _ARPA_FTP_H
 #define PRELIM 1
 #define COMPLETE 2
 #define CONTINUE 3