Index: uspace/lib/c/include/syscall.h
===================================================================
--- uspace/lib/c/include/syscall.h	(revision 5b0cf635022b821f28f7a014ad5b39d005cd7666)
+++ uspace/lib/c/include/syscall.h	(revision 0076b9d08217ab74cb57f3a302bc6cd3d6bf1879)
@@ -37,6 +37,6 @@
  */
 
-#ifndef LIBC_SYSCALL_H_
-#define LIBC_SYSCALL_H_
+#ifndef _LIBC_SYSCALL_H_
+#define _LIBC_SYSCALL_H_
 
 #ifndef LIBARCH_SYSCALL_GENERIC