diff --git a/lib/hostip4.c b/lib/hostip4.c
index 50d2adaa8..ebbb9e375 100644
--- a/lib/hostip4.c
+++ b/lib/hostip4.c
@@ -161,7 +161,7 @@ Curl_addrinfo *Curl_ip2addr(in_addr_t num, char *hostname, int port)
   h->h_aliases = NULL;
 
   /* Now store the dotted version of the address */
-  snprintf(h->h_name, 16, "%s", hostname);
+  snprintf((char *)h->h_name, 16, "%s", hostname);
 
   ai = Curl_he2ai(h, port);