diff --git a/include/osmocom/msc/ran_msg.h b/include/osmocom/msc/ran_msg.h
index 32b24a0..d6b1e75 100644
--- a/include/osmocom/msc/ran_msg.h
+++ b/include/osmocom/msc/ran_msg.h
@@ -240,7 +240,8 @@
 		struct {
 			struct osmo_sockaddr_str remote_rtp;
 			bool codec_present;
-			enum mgcp_codecs codec;
+			struct gsm0808_speech_codec codec;
+			bool codec_with_iuup;
 			const struct gsm0808_speech_codec_list *codec_list_bss_supported;
 			bool osmux_present;
 			uint8_t osmux_cid;