diff --git a/toxcore/network.c b/toxcore/network.c
index 08fb71c7..1186a468 100644
--- a/toxcore/network.c
+++ b/toxcore/network.c
@@ -258,10 +258,14 @@ static int receivepacket(sock_t sock, IP_Port *ip_port, uint8_t *data, uint32_t
         ip_port->port = addr_in->sin_port;
     } else if (addr.ss_family == AF_INET6) {
         struct sockaddr_in6 *addr_in6 = (struct sockaddr_in6 *)&addr;
-
         ip_port->ip.family = addr_in6->sin6_family;
         ip_port->ip.ip6.in6_addr = addr_in6->sin6_addr;
         ip_port->port = addr_in6->sin6_port;
+
+        if (IN6_IS_ADDR_V4MAPPED(&ip_port->ip.ip6.in6_addr)) {
+            ip_port->ip.family = AF_INET;
+            ip_port->ip.ip4.uint32 = ip_port->ip.ip6.uint32[3];
+        }
     } else
         return -1;
 
diff --git a/toxcore/network.h b/toxcore/network.h
index 2ba2b005..4c7f1a83 100644
--- a/toxcore/network.h
+++ b/toxcore/network.h
@@ -81,7 +81,7 @@ typedef int sock_t;
 #endif
 
 #if defined(__AIX__)
-#	define _XOPEN_SOURCE 1
+#   define _XOPEN_SOURCE 1
 #endif
 
 #if defined(__sun__)