diff --git a/sys/net/crosslayer/net_help/inet_ntop.c b/sys/net/crosslayer/net_help/inet_ntop.c
index 31881e71f1..4e4d961e9a 100644
--- a/sys/net/crosslayer/net_help/inet_ntop.c
+++ b/sys/net/crosslayer/net_help/inet_ntop.c
@@ -18,8 +18,6 @@
 #include <string.h>
 #include <stdint.h>
 
-#include "destiny/socket.h"
-
 #include "inet_ntop.h"
 
 /* const char *
diff --git a/sys/net/crosslayer/net_help/inet_pton.c b/sys/net/crosslayer/net_help/inet_pton.c
index 05fc033386..de773e9d06 100644
--- a/sys/net/crosslayer/net_help/inet_pton.c
+++ b/sys/net/crosslayer/net_help/inet_pton.c
@@ -18,8 +18,6 @@
 #include <string.h>
 #include <stdint.h>
 
-#include "destiny/socket.h"
-
 #include "inet_pton.h"
 
 /* int
diff --git a/sys/net/include/destiny/socket.h b/sys/net/include/destiny/socket.h
index b0332b3e46..853b9b22b1 100644
--- a/sys/net/include/destiny/socket.h
+++ b/sys/net/include/destiny/socket.h
@@ -41,7 +41,9 @@ typedef uint32_t  socklen_t;    ///< POSIX compatible type for address length.
 #define AF_UNSPEC           0           ///< unspecified address family.
 #define AF_LOCAL            1           ///< local to host (pipes, portals) address family.
 #define AF_UNIX             AF_LOCAL    ///< alias for AF_LOCAL for backward compatibility.
+#ifndef AF_INET
 #define AF_INET             2           ///< internetwork address family: UDP, TCP, etc.
+#endif
 #define AF_IMPLINK          3           ///< ARPAnet IMP address family.
 #define AF_PUP              4           ///< PUP protocols address family: e.g. BSP
 #define AF_CHAOS            5           ///< MIT CHAOS protocols address family
@@ -69,12 +71,14 @@ typedef uint32_t  socklen_t;    ///< POSIX compatible type for address length.
 #define AF_ISDN             26          ///< Integrated Services Digital Network address family
 #define AF_E164             AF_ISDN     ///< CCITT E.164 recommendation
 #define pseudo_AF_KEY       27          ///< Internal key-management function (no AF)
+#ifndef AF_INET6
 /**
  * IPv6 address family.
  *
  * @see AF_INET
  */
 #define AF_INET6            28
+#endif
 #define AF_NATM             29          ///< native ATM access address family
 #define AF_ATM              30          ///< ATM address family
 #define pseudo_AF_HDRCMPLT  31          ///< Used by BPF to not rewrite headers in interface output routine
diff --git a/sys/net/include/inet_ntop.h b/sys/net/include/inet_ntop.h
index 2e94fa4bf5..deb69ccd0f 100644
--- a/sys/net/include/inet_ntop.h
+++ b/sys/net/include/inet_ntop.h
@@ -1,5 +1,18 @@
 #ifndef INET_NTOP_H_
 #define INET_NTOP_H_
+#include <stdlib.h>
+
+#ifndef AF_INET
+#define AF_INET             2           ///< internetwork address family: UDP, TCP, etc.
+#endif
+#ifndef AF_INET6
+/**
+ * IPv6 address family.
+ *
+ * @see AF_INET
+ */
+#define AF_INET6            28
+#endif
 
 #ifndef IN6ADDRSZ
 #define IN6ADDRSZ   16
diff --git a/sys/net/include/inet_pton.h b/sys/net/include/inet_pton.h
index b41e4fcac6..6a88d096b1 100644
--- a/sys/net/include/inet_pton.h
+++ b/sys/net/include/inet_pton.h
@@ -1,5 +1,18 @@
 #ifndef INET_PTON_H_
 #define INET_PTON_H_
+#include <stdlib.h>
+
+#ifndef AF_INET
+#define AF_INET             2           ///< internetwork address family: UDP, TCP, etc.
+#endif
+#ifndef AF_INET6
+/**
+ * IPv6 address family.
+ *
+ * @see AF_INET
+ */
+#define AF_INET6            28
+#endif
 
 #ifndef IN6ADDRSZ
 #define IN6ADDRSZ   16