-#define SIMGRID_MC_EXIT_SUCCESS 0
-#define SIMGRID_MC_EXIT_SAFETY 1
-#define SIMGRID_MC_EXIT_LIVENESS 2
-#define SIMGRID_MC_EXIT_DEADLOCK 3
-#define SIMGRID_MC_EXIT_NON_TERMINATION 4
-#define SIMGRID_MC_EXIT_NON_DETERMINISM 5
-#define SIMGRID_MC_EXIT_PROGRAM_CRASH 6
+constexpr int SIMGRID_MC_EXIT_SUCCESS = 0;
+constexpr int SIMGRID_MC_EXIT_SAFETY = 1;
+constexpr int SIMGRID_MC_EXIT_LIVENESS = 2;
+constexpr int SIMGRID_MC_EXIT_DEADLOCK = 3;
+constexpr int SIMGRID_MC_EXIT_NON_TERMINATION = 4;
+constexpr int SIMGRID_MC_EXIT_NON_DETERMINISM = 5;
+constexpr int SIMGRID_MC_EXIT_PROGRAM_CRASH = 6;