@@ -2084,6 +2084,10 @@ int main(int argc, char** argv)

 					ksr_slog_init(optarg);

 					break;

 			case KARGOPTVAL+8:

+					if (optarg == NULL) {

+						fprintf(stderr, "bad debug level value\n");

+						goto error;

+					}

 					debug_flag = 1;

 					default_core_cfg.debug=(int)strtol(optarg, &tmp, 10);

 					if ((tmp==0) || (*tmp)){