diff --git a/lib/ftp.c b/lib/ftp.c
index 44c4f456dbb8645970f7647473cb4eb8a3e89b38..363b9a41225c54629b86649a82061382635f5c35 100644
--- a/lib/ftp.c
+++ b/lib/ftp.c
@@ -875,7 +875,7 @@ static CURLcode ftp_state_use_port(struct connectdata *conn,
    * IPv6-specific section
    */
   struct Curl_sockaddr_storage ss;
-  struct addrinfo *res, *ai;
+  Curl_ addrinfo *res, *ai;
   socklen_t sslen;
   char hbuf[NI_MAXHOST];
   struct sockaddr *sa=(struct sockaddr *)&ss;