diff --git a/coreapi/linphone_tunnel.cc b/coreapi/linphone_tunnel.cc
index 73373b918..17a54d178 100644
--- a/coreapi/linphone_tunnel.cc
+++ b/coreapi/linphone_tunnel.cc
@@ -198,6 +198,7 @@ static void linphone_tunnel_refresh_config(LinphoneTunnel *tunnel) {
 	while(old_list != NULL) {
 		LinphoneTunnelConfig *tunnel_config = (LinphoneTunnelConfig *)old_list->data;
 		linphone_tunnel_add_server_intern(tunnel, tunnel_config);
+		linphone_tunnel_config_unref(tunnel_config);
 		old_list = old_list->next;
 	}
 }
diff --git a/tester/tunnel_tester.c b/tester/tunnel_tester.c
index 0d853ac6a..724f04d0e 100644
--- a/tester/tunnel_tester.c
+++ b/tester/tunnel_tester.c
@@ -99,6 +99,7 @@ static void call_with_tunnel_base(LinphoneTunnelMode tunnel_mode, bool_t with_si
 			linphone_tunnel_add_server(tunnel, config);
 			linphone_tunnel_set_mode(tunnel, tunnel_mode);
 			linphone_tunnel_enable_sip(tunnel, with_sip);
+			linphone_tunnel_config_unref(config);
 
 			/*
 			 * Enabling the tunnel with sip cause another REGISTER to be made.