diff --git a/lib/krb5/krbhst.c b/lib/krb5/krbhst.c
index f53512883..1c93b75cb 100644
--- a/lib/krb5/krbhst.c
+++ b/lib/krb5/krbhst.c
@@ -353,14 +353,14 @@ krb5_krbhst_format_string(krb5_context context, const krb5_krbhst_info *host,
 			  char *hostname, size_t hostlen)
 {
     const char *proto = "";
-    char portstr[7] = "";
     if(host->proto == KRB5_KRBHST_TCP)
 	proto = "tcp/";
     else if(host->proto == KRB5_KRBHST_HTTP)
 	proto = "http://";
-    if(host->port != host->def_port)
-	snprintf(portstr, sizeof(portstr), ":%d", host->port);
-    snprintf(hostname, hostlen, "%s%s%s", proto, host->hostname, portstr);
+    if (host->port != host->def_port)
+	snprintf(hostname, hostlen, "%s%s:%d", proto, host->hostname, (int)host->port);
+    else
+	snprintf(hostname, hostlen, "%s%s", proto, host->hostname);
     return 0;
 }