Index: uspace/lib/c/include/smc.h
===================================================================
--- uspace/lib/c/include/smc.h	(revision 1c3c287faa0cdc5e3cedcbfc47dc2ffd4b4e73bd)
+++ uspace/lib/c/include/smc.h	(revision bc73be3215c832cdb0c8a5022db800902f9f62dc)
@@ -33,6 +33,6 @@
  */
 
-#ifndef LIBC_SMC_H_
-#define LIBC_SMC_H_
+#ifndef _LIBC_SMC_H_
+#define _LIBC_SMC_H_
 
 #include <errno.h>