Index: uspace/lib/c/include/inet/tcp.h
===================================================================
--- uspace/lib/c/include/inet/tcp.h	(revision 09ab0a9afc9379f1604c0fd75cac2d9287ba022c)
+++ uspace/lib/c/include/inet/tcp.h	(revision 8add15e0d742e2ce9688f92ee8e6378e2caa7b04)
@@ -33,6 +33,6 @@
  */
 
-#ifndef LIBC_INET_TCP_H_
-#define LIBC_INET_TCP_H_
+#ifndef _LIBC_INET_TCP_H_
+#define _LIBC_INET_TCP_H_
 
 #include <fibril_synch.h>