-XBT_INTERNAL int MC_request_depend(smx_simcall_t req1, smx_simcall_t req2);
-XBT_INTERNAL char* MC_request_to_string(smx_simcall_t req, int value, e_mc_request_type_t type);
-XBT_INTERNAL unsigned int MC_request_testany_fail(smx_simcall_t req);
-/*int MC_waitany_is_enabled_by_comm(smx_req_t req, unsigned int comm);*/
-XBT_INTERNAL int MC_request_is_visible(smx_simcall_t req);
+XBT_PRIVATE int MC_request_depend(smx_simcall_t req1, smx_simcall_t req2);
+XBT_PRIVATE char* MC_request_to_string(smx_simcall_t req, int value, e_mc_request_type_t type);
+XBT_PRIVATE unsigned int MC_request_testany_fail(smx_simcall_t req);
+/* XBT_PRIVATE int MC_waitany_is_enabled_by_comm(smx_req_t req, unsigned int comm);*/
+XBT_PRIVATE int MC_request_is_visible(smx_simcall_t req);