diff --git a/ares/ahost.c b/ares/ahost.c
index a5f8fb5af7..882efcc774 100644
--- a/ares/ahost.c
+++ b/ares/ahost.c
@@ -142,6 +142,8 @@ static void callback(void *arg, int status, int timeouts, struct hostent *host)
 {
   char **p;
 
+  (void)timeouts;
+
   if (status != ARES_SUCCESS)
     {
       fprintf(stderr, "%s: %s\n", (char *) arg, ares_strerror(status));