diff --git a/sys/netinet/in.h b/sys/netinet/in.h
index d424128fa59a..e946c4e3f487 100644
--- a/sys/netinet/in.h
+++ b/sys/netinet/in.h
@@ -256,6 +256,11 @@ typedef	uint16_t		in_port_t;
 #define	_IN_PORT_T_DECLARED
 #endif
 
+#ifdef _BSD_SA_FAMILY_T_
+typedef	_BSD_SA_FAMILY_T_	sa_family_t;
+#undef _BSD_SA_FAMILY_T_
+#endif
+
 /*
  * Internet address (a structure for historical reasons)
  */
diff --git a/sys/sys/_types.h b/sys/sys/_types.h
index 676430a1ef11..f4cdb37d37d1 100644
--- a/sys/sys/_types.h
+++ b/sys/sys/_types.h
@@ -33,6 +33,7 @@
 #include <machine/ansi.h>
 
 #define	_BSD_GID_T_	__uint32_t
+#define	_BSD_SA_FAMILY_T_	__uint8_t
 #define	_BSD_UID_T_	__uint32_t
 
 #endif /* !_SYS__TYPES_H_ */
diff --git a/sys/sys/socket.h b/sys/sys/socket.h
index 86f78dde3e38..9e054b47ae86 100644
--- a/sys/sys/socket.h
+++ b/sys/sys/socket.h
@@ -37,7 +37,7 @@
 #ifndef _SYS_SOCKET_H_
 #define	_SYS_SOCKET_H_
 
-#include <machine/ansi.h>
+#include <sys/_types.h>
 #define _NO_NAMESPACE_POLLUTION
 #include <machine/param.h>
 #undef _NO_NAMESPACE_POLLUTION
@@ -49,7 +49,11 @@
 /*
  * Data types.
  */
-typedef u_char		sa_family_t;
+#ifdef _BSD_SA_FAMILY_T_
+typedef	_BSD_SA_FAMILY_T_	sa_family_t;
+#undef _BSD_SA_FAMILY_T_
+#endif
+
 #ifdef	_BSD_SOCKLEN_T_
 typedef	_BSD_SOCKLEN_T_	socklen_t;
 #undef	_BSD_SOCKLEN_T_