diff --git a/ext/opus/gstopusdec.c b/ext/opus/gstopusdec.c
index 20eb442455..d8a7eb85fa 100644
--- a/ext/opus/gstopusdec.c
+++ b/ext/opus/gstopusdec.c
@@ -167,6 +167,9 @@ gst_opus_dec_init (GstOpusDec * dec)
   dec->apply_gain = DEFAULT_APPLY_GAIN;
 
   gst_audio_decoder_set_needs_format (GST_AUDIO_DECODER (dec), TRUE);
+  gst_audio_decoder_set_use_default_pad_acceptcaps (GST_AUDIO_DECODER_CAST
+      (dec), TRUE);
+  GST_PAD_SET_ACCEPT_TEMPLATE (GST_AUDIO_DECODER_SINK_PAD (dec));
 
   gst_opus_dec_reset (dec);
 }