Index: uspace/lib/c/include/ipc/adb.h
===================================================================
--- uspace/lib/c/include/ipc/adb.h	(revision 64d2b101abaf56a6f7c27f0d6b099785aa173f36)
+++ uspace/lib/c/include/ipc/adb.h	(revision 9eea0b783493decf0abf11e5aa37be12b86e7706)
@@ -34,6 +34,6 @@
  */
 
-#ifndef LIBC_IPC_ADB_H_
-#define LIBC_IPC_ADB_H_
+#ifndef _LIBC_IPC_ADB_H_
+#define _LIBC_IPC_ADB_H_
 
 #include <ipc/common.h>