Index: uspace/lib/c/include/loader/loader.h
===================================================================
--- uspace/lib/c/include/loader/loader.h	(revision b1834a01038fc2eeb50637bb5cb48a741a03b9fb)
+++ uspace/lib/c/include/loader/loader.h	(revision 0f6a85ae5bc94c0e622f65a41fbc8e9b809c7667)
@@ -34,6 +34,6 @@
  */
 
-#ifndef LIBC_LOADER_H_
-#define LIBC_LOADER_H_
+#ifndef _LIBC_LOADER_H_
+#define _LIBC_LOADER_H_
 
 #include <abi/proc/task.h>
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 0f6a85ae5bc94c0e622f65a41fbc8e9b809c7667)
@@ -34,6 +34,6 @@
  */
 
-#ifndef LIBC_PCB_H_
-#define LIBC_PCB_H_
+#ifndef _LIBC_PCB_H_
+#define _LIBC_PCB_H_
 
 #include <tls.h>