diff --git a/configure.in b/configure.in
index 5c5a455..df7adf2 100644
--- a/configure.in
+++ b/configure.in
@@ -350,7 +350,10 @@ AC_CHECK_MEMBERS([struct utmpx.ut_host, struct utmpx.ut_syslen, struct utmpx.ut_
 #endif
 ])
 
-AC_CHECK_MEMBERS([struct sockaddr_storage.ss_family],,,[])
+AC_CHECK_MEMBERS([struct sockaddr_storage.ss_family],,,[
+#include <sys/types.h>
+#include <sys/socket.h>
+])
 
 AC_CHECK_FUNCS(endutent getutent getutid getutline pututline setutent)
 AC_CHECK_FUNCS(utmpname)