diff --git a/daemon/sdp.c b/daemon/sdp.c
index 1d9e1bded..5deaa7364 100644
--- a/daemon/sdp.c
+++ b/daemon/sdp.c
@@ -3368,7 +3368,7 @@ error:
 	return -1;
 }
 
-int sdp_create(str *out, struct call_monologue *monologue, const sdp_ng_flags *flags) {
+int sdp_create(str *out, struct call_monologue *monologue, sdp_ng_flags *flags) {
 	const char *err = NULL;
 	GString *s = NULL;
 
diff --git a/include/sdp.h b/include/sdp.h
index 47249c9ef..c66bdff23 100644
--- a/include/sdp.h
+++ b/include/sdp.h
@@ -81,7 +81,7 @@ void sdp_streams_clear(sdp_streams_q *);
 void sdp_sessions_clear(sdp_sessions_q *sessions);
 int sdp_replace(struct sdp_chopper *, sdp_sessions_q *, struct call_monologue *, sdp_ng_flags *);
 int sdp_is_duplicate(sdp_sessions_q *sessions);
-int sdp_create(str *out, struct call_monologue *, const sdp_ng_flags *flags);
+int sdp_create(str *out, struct call_monologue *, sdp_ng_flags *flags);
 const char *sdp_get_sendrecv(struct call_media *media);
 
 int sdp_parse_candidate(struct ice_candidate *cand, const str *s); // returns -1, 0, 1