--- ./src/libmongoc/src/mongoc/mongoc-socket.h.orig	2019-11-28 13:40:06.000000000 +0100
+++ ./src/libmongoc/src/mongoc/mongoc-socket.h	2019-11-28 13:40:14.000000000 +0100
@@ -38,10 +38,6 @@
 #include <sys/un.h>
 #endif
 
-#if defined(_AIX) && !defined(HAVE_SA_SS_FAMILY)
-# define ss_family __ss_family
-#endif
-
 #include "mongoc/mongoc-iovec.h"