diff --git a/ares/inet_net_pton.h b/ares/inet_net_pton.h
index 070a24f7035338becda1525f0a564d3adad2ed37..f3fc609a9aebc99326bf3ab83d161569bd076884 100644
--- a/ares/inet_net_pton.h
+++ b/ares/inet_net_pton.h
@@ -1,3 +1,6 @@
+#ifndef __ARES_INET_NET_PTON_H
+#define __ARES_INET_NET_PTON_H
+
 /* $Id$ */
 
 /*
@@ -14,9 +17,6 @@
  * without express or implied warranty.
  */
 
-#ifndef INET_NET_PTON_H
-#define INET_NET_PTON_H
-
 #if defined(HAVE_INET_PTON) && defined(HAVE_INET_PTON_IPV6)
 #define ares_inet_pton(x,y,z) inet_pton(x,y,z)
 #else
@@ -28,4 +28,4 @@ int ares_inet_pton(int af, const char *src, void *dst);
 int ares_inet_net_pton(int af, const char *src, void *dst, size_t size);
 #endif
 
-#endif /* INET_NET_PTON_H */
+#endif /* __ARES_INET_NET_PTON_H */