diff --git a/ares/configure.ac b/ares/configure.ac
index b28c892d13b0f610c34b0d2d1c2997ae35be5f7d..ca8bb6add648e02df1081de29d7834bb0240b304 100644
--- a/ares/configure.ac
+++ b/ares/configure.ac
@@ -68,7 +68,8 @@ AC_CHECK_HEADERS(
        winsock.h \
        netinet/in.h \
        arpa/nameser.h \
-       arpa/nameser_compat.h
+       arpa/nameser_compat.h \
+       arpa/inet.h
   )
 
 dnl check for AF_INET6