diff --git a/include/osmocom/msc/codec_filter.h b/include/osmocom/msc/codec_filter.h
index c90388d..ca32e3c 100644
--- a/include/osmocom/msc/codec_filter.h
+++ b/include/osmocom/msc/codec_filter.h
@@ -52,7 +52,6 @@
 	struct sdp_msg result;
 };
 
-void codec_filter_init(struct codec_filter *codec_filter);
 void codec_filter_set_ran(struct codec_filter *codec_filter, enum osmo_rat_type ran_type);
 void codec_filter_set_bss(struct codec_filter *codec_filter,
 			  const struct gsm0808_speech_codec_list *codec_list_bss_supported);
diff --git a/include/osmocom/msc/transaction_cc.h b/include/osmocom/msc/transaction_cc.h
index df0f9d8..c2550f6 100644
--- a/include/osmocom/msc/transaction_cc.h
+++ b/include/osmocom/msc/transaction_cc.h
@@ -30,4 +30,5 @@
 #include <osmocom/msc/transaction.h>
 #include <osmocom/msc/vlr.h>
 
+void trans_cc_filter_init(struct gsm_trans *trans);
 void trans_cc_filter_set_ms_from_bc(struct gsm_trans *trans, const struct gsm_mncc_bearer_cap *bcap);