diff --git a/ext/speex/gstspeexenc.c b/ext/speex/gstspeexenc.c
index 79b3cb3ac7..31712b6878 100644
--- a/ext/speex/gstspeexenc.c
+++ b/ext/speex/gstspeexenc.c
@@ -242,6 +242,7 @@ gst_speex_enc_init (GstSpeexEnc * enc)
   /* arrange granulepos marking (and required perfect ts) */
   gst_audio_encoder_set_mark_granule (benc, TRUE);
   gst_audio_encoder_set_perfect_timestamp (benc, TRUE);
+  GST_PAD_SET_ACCEPT_TEMPLATE (GST_AUDIO_ENCODER_SINK_PAD (enc));
 }
 
 static gboolean
diff --git a/ext/wavpack/gstwavpackenc.c b/ext/wavpack/gstwavpackenc.c
index 386524b406..95a8e8f569 100644
--- a/ext/wavpack/gstwavpackenc.c
+++ b/ext/wavpack/gstwavpackenc.c
@@ -345,6 +345,8 @@ gst_wavpack_enc_init (GstWavpackEnc * enc)
 
   /* require perfect ts */
   gst_audio_encoder_set_perfect_timestamp (benc, TRUE);
+
+  GST_PAD_SET_ACCEPT_TEMPLATE (GST_AUDIO_ENCODER_SINK_PAD (enc));
 }
 
 
diff --git a/gst/law/alaw-encode.c b/gst/law/alaw-encode.c
index f1e033271f..ebee1920fe 100644
--- a/gst/law/alaw-encode.c
+++ b/gst/law/alaw-encode.c
@@ -423,4 +423,5 @@ gst_alaw_enc_class_init (GstALawEncClass * klass)
 static void
 gst_alaw_enc_init (GstALawEnc * alawenc)
 {
+  GST_PAD_SET_ACCEPT_TEMPLATE (GST_AUDIO_ENCODER_SINK_PAD (alawenc));
 }
diff --git a/gst/law/mulaw-encode.c b/gst/law/mulaw-encode.c
index e92e5e6d17..2e0b14b967 100644
--- a/gst/law/mulaw-encode.c
+++ b/gst/law/mulaw-encode.c
@@ -207,5 +207,5 @@ gst_mulawenc_class_init (GstMuLawEncClass * klass)
 static void
 gst_mulawenc_init (GstMuLawEnc * mulawenc)
 {
-
+  GST_PAD_SET_ACCEPT_TEMPLATE (GST_AUDIO_ENCODER_SINK_PAD (mulawenc));
 }