diff --git a/mio/lib/http-thr.c b/mio/lib/http-thr.c
index 4a507bc..9c03980 100644
--- a/mio/lib/http-thr.c
+++ b/mio/lib/http-thr.c
@@ -879,7 +879,11 @@ int mio_svc_htts_dothr (mio_svc_htts_t* htts, mio_dev_sck_t* csck, mio_htre_t* r
 	MIO_SVC_HTTS_RSRC_ATTACH (thr_state, cli->rsrc);
 
 	thr_state->peer = mio_dev_thr_make(mio, MIO_SIZEOF(*thr_peer), &mi);
-	if (MIO_UNLIKELY(!thr_state->peer)) { printf ("dev thr make failure. \n"); goto oops; }
+	if (MIO_UNLIKELY(!thr_state->peer)) 
+	{ 
+		MIO_DEBUG3 (mio, "HTTS(%p) - failed to create thread for %p(%d)\n", htts, csck, (int)csck->hnd);
+		goto oops; 
+	}
 
 	tfs = MIO_NULL; /* mark that tfs is delegated to the thread */