diff --git a/gst/rtpdtmf/gstrtpdtmfsrc.c b/gst/rtpdtmf/gstrtpdtmfsrc.c
index 5e3a2555de..e952129ad6 100644
--- a/gst/rtpdtmf/gstrtpdtmfsrc.c
+++ b/gst/rtpdtmf/gstrtpdtmfsrc.c
@@ -302,8 +302,6 @@ gst_rtp_dtmf_src_init (GstRTPDTMFSrc * dtmfsrc, gpointer g_class)
   dtmfsrc->pt = DEFAULT_PT;
   dtmfsrc->clock_rate = DEFAULT_CLOCK_RATE;
   
-  gst_rtp_dtmf_src_set_caps (dtmfsrc);
-  
   GST_DEBUG_OBJECT (dtmfsrc, "init done");
 }
 
@@ -503,6 +501,8 @@ gst_rtp_dtmf_src_start (GstRTPDTMFSrc *dtmfsrc,
   else
     dtmfsrc->ts_base = dtmfsrc->ts_offset;
 
+  gst_rtp_dtmf_src_set_caps (dtmfsrc);
+
   /* Don't forget to get exclusive access to the stream */
   gst_rtp_dtmf_src_set_stream_lock (dtmfsrc, TRUE);