Index: uspace/lib/c/include/loader/pcb.h
===================================================================
--- uspace/lib/c/include/loader/pcb.h	(revision b1834a01038fc2eeb50637bb5cb48a741a03b9fb)
+++ uspace/lib/c/include/loader/pcb.h	(revision 1995ac3eb9bf37f3e753f79bcf6dba1a3c3df86e)
@@ -34,6 +34,6 @@
  */
 
-#ifndef LIBC_PCB_H_
-#define LIBC_PCB_H_
+#ifndef _LIBC_PCB_H_
+#define _LIBC_PCB_H_
 
 #include <tls.h>