diff --git a/src/gst/gstpipewiresrc.c b/src/gst/gstpipewiresrc.c
index 9458a23c5..77d43c9d9 100644
--- a/src/gst/gstpipewiresrc.c
+++ b/src/gst/gstpipewiresrc.c
@@ -409,6 +409,9 @@ on_process (void *_data)
 
   GST_LOG_OBJECT (pwsrc, "got new buffer %p", buf);
 
+  GST_BUFFER_PTS (buf) = GST_CLOCK_TIME_NONE;
+  GST_BUFFER_DTS (buf) = GST_CLOCK_TIME_NONE;
+
   h = data->header;
   if (h) {
     GST_INFO ("pts %" G_GUINT64_FORMAT ", dts_offset %"G_GUINT64_FORMAT, h->pts, h->dts_offset);