Index: uspace/lib/c/include/vfs/canonify.h
===================================================================
--- uspace/lib/c/include/vfs/canonify.h	(revision 1b20da07baaa3e3c424f62c927274e676e4295cd)
+++ uspace/lib/c/include/vfs/canonify.h	(revision bc73be3215c832cdb0c8a5022db800902f9f62dc)
@@ -33,6 +33,6 @@
  */
 
-#ifndef LIBC_VFS_CANONIFY_H_
-#define LIBC_VFS_CANONIFY_H_
+#ifndef _LIBC_VFS_CANONIFY_H_
+#define _LIBC_VFS_CANONIFY_H_
 
 #include <stddef.h>