Index: uspace/lib/c/include/nic/eth_phys.h
===================================================================
--- uspace/lib/c/include/nic/eth_phys.h	(revision 1433ecda9b732f3f185f902feb26826ec2496e03)
+++ uspace/lib/c/include/nic/eth_phys.h	(revision 9e7406a2a39bbff4e859b08f08ee4427c1384ab3)
@@ -28,6 +28,6 @@
  */
 
-#ifndef LIBC_NIC_ETH_PHYS_H_
-#define LIBC_NIC_ETH_PHYS_H_
+#ifndef _LIBC_NIC_ETH_PHYS_H_
+#define _LIBC_NIC_ETH_PHYS_H_
 
 #include <stdint.h>
Index: uspace/lib/c/include/nic/nic.h
===================================================================
--- uspace/lib/c/include/nic/nic.h	(revision 1433ecda9b732f3f185f902feb26826ec2496e03)
+++ uspace/lib/c/include/nic/nic.h	(revision 9e7406a2a39bbff4e859b08f08ee4427c1384ab3)
@@ -36,6 +36,6 @@
  */
 
-#ifndef LIBC_NIC_H_
-#define LIBC_NIC_H_
+#ifndef _LIBC_NIC_H_
+#define _LIBC_NIC_H_
 
 #include <nic/eth_phys.h>