diff --git a/configure.in b/configure.in
index 0a40e4ca..f80ef1eb 100644
--- a/configure.in
+++ b/configure.in
@@ -100,7 +100,7 @@ dnl Checks for library functions.
 AC_CHECK_FUNCS(nanosleep)
 AC_CHECK_FUNCS(poll)
 AC_CHECK_FUNCS(sethostent endhostent)
-AC_CHECK_FUNCS(getnameinfo getaddrinfo inet_pton)
+AC_CHECK_FUNCS(getnameinfo getaddrinfo inet_pton inet_aton)
 
 dnl -- configure options --