diff --git a/coreapi/linphone_tunnel_stubs.c b/coreapi/linphone_tunnel_stubs.c
index 8c58e0d48..8abe7a431 100644
--- a/coreapi/linphone_tunnel_stubs.c
+++ b/coreapi/linphone_tunnel_stubs.c
@@ -65,6 +65,14 @@ LinphoneTunnelMode linphone_tunnel_get_mode(const LinphoneTunnel *tunnel){
 	return LinphoneTunnelModeDisable;
 }
 
+void linphone_tunnel_set_dual_mode(LinphoneTunnel *tunnel, bool_t dual_mode_enabled) {
+	ms_warning("linphone_tunnel_set_dual_mode() - stubbed, no implementation");
+}
+
+bool_t linphone_tunnel_get_dual_mode(const LinphoneTunnel *tunnel) {
+	ms_warning("linphone_tunnel_get_dual_mode() - stubbed, no implementation");
+}
+
 bool_t linphone_tunnel_connected(const LinphoneTunnel *tunnel){
 	return FALSE;
 }