diff --git a/stream/stream.h b/stream/stream.h
index 77319871c0..828c364d40 100644
--- a/stream/stream.h
+++ b/stream/stream.h
@@ -299,7 +299,8 @@ inline static int stream_seek(stream_t *s,off_t pos){
   mp_dbg(MSGT_DEMUX, MSGL_DBG3, "seek to 0x%qX\n",(long long)pos);
 
   if (pos < 0) {
-    mp_msg(MSGT_DEMUX, MSGL_ERR, "Invalid seek to negative position!\n");
+    mp_msg(MSGT_DEMUX, MSGL_ERR, "Invalid seek to negative position %llx!\n",
+           (long long)pos);
     pos = 0;
   }
   if(pos<s->pos){