diff --git a/channels/chan_gulp.c b/channels/chan_gulp.c
index 395987405dacca348c2609ebe9b64be32f35dc82..0b7dedfb8764a394d40b734bb066312d1318b256 100644
--- a/channels/chan_gulp.c
+++ b/channels/chan_gulp.c
@@ -434,7 +434,7 @@ static struct ast_channel *gulp_new(struct ast_sip_session *session, int state,
 	pvt->media[SIP_MEDIA_VIDEO] = ao2_find(session->media, "video", OBJ_KEY);
 	ast_channel_tech_pvt_set(chan, pvt);
 
-	if (ast_format_cap_is_empty(session->req_caps)) {
+	if (ast_format_cap_is_empty(session->req_caps) || !ast_format_cap_has_joint(session->req_caps, session->endpoint->codecs)) {
 		ast_format_cap_copy(ast_channel_nativeformats(chan), session->endpoint->codecs);
 	} else {
 		ast_format_cap_copy(ast_channel_nativeformats(chan), session->req_caps);
diff --git a/res/res_sip_sdp_rtp.c b/res/res_sip_sdp_rtp.c
index 13e6aa1aa5fbfe7338f3245900d537b1c913614c..d0af479c70de90408c4c0b087b4f7830bcf53857 100644
--- a/res/res_sip_sdp_rtp.c
+++ b/res/res_sip_sdp_rtp.c
@@ -556,7 +556,7 @@ static int create_outgoing_sdp_stream(struct ast_sip_session *session, struct as
 
 	if (direct_media_enabled) {
 		ast_format_cap_joint_copy(session->endpoint->codecs, session->direct_media_cap, caps);
-	} else if (ast_format_cap_is_empty(session->req_caps)) {
+	} else if (ast_format_cap_is_empty(session->req_caps) || !ast_format_cap_has_joint(session->req_caps, session->endpoint->codecs)) {
 		ast_format_cap_copy(caps, session->endpoint->codecs);
 	} else {
 		ast_format_cap_joint_copy(session->endpoint->codecs, session->req_caps, caps);