diff --git a/src/server.c b/src/server.c
index ea50fd1e..4d7c70b0 100644
--- a/src/server.c
+++ b/src/server.c
@@ -971,7 +971,7 @@ server_recv_cb(EV_P_ ev_io *w, int revents)
             memset(query, 0, sizeof(query_t));
             query->server = server;
             server->query = query;
-            snprintf(query->hostname, 256, "%s", host);
+            snprintf(query->hostname, 257, "%s", host);
 
             server->stage = STAGE_RESOLVE;
             resolv_start(host, port, resolv_cb, resolv_free_cb, query);