diff --git a/headers/os/net/NetAddress.h b/headers/os/net/NetAddress.h
index 268913ce48..8dc9874ed8 100644
--- a/headers/os/net/NetAddress.h
+++ b/headers/os/net/NetAddress.h
@@ -28,8 +28,8 @@
  *=--------------------------------------------------------------------------=*
  */
 
-#ifndef NETADDRESS_H
-#define NETADDRESS_H
+#ifndef _NETADDRESS_H
+#define _NETADDRESS_H
 
 #include <Archivable.h>
 #include <Errors.h>
@@ -99,7 +99,7 @@ inline NLAddress* BNetAddress::GetImpl( void ) const
     return NULL; // Cheeky, yes; but no Nettle stuff is allowed...
 }
 
-#endif // <-- #ifndef NETADDRESS_H
+#endif // <-- #ifndef _NETADDRESS_H
 
 
 /*=------------------------------------------------------------------- End -=*/
diff --git a/headers/os/net/netdb.h b/headers/os/net/netdb.h
index 739bd8d2e0..dd3fb6b7f1 100644
--- a/headers/os/net/netdb.h
+++ b/headers/os/net/netdb.h
@@ -3,4 +3,4 @@
 
 #include <netdb.h> /* should include the posix netdb.h */
 
-#endif /* _NETDB_H */
+#endif /* _NET_NETDB_H */
diff --git a/headers/os/net/socket.h b/headers/os/net/socket.h
index 094411148e..b7fe0bdff0 100644
--- a/headers/os/net/socket.h
+++ b/headers/os/net/socket.h
@@ -11,4 +11,4 @@
  */
 #define B_UDP_MAX_SIZE (65536 - 1024) 
 
-#endif /* _SOCKET_H */
+#endif /* _NET_SOCKET_H */