diff --git a/f3probe.c b/f3probe.c
index 8a2ed45..fa19157 100644
--- a/f3probe.c
+++ b/f3probe.c
@@ -163,10 +163,12 @@ static error_t parse_opt(int key, char *arg, struct argp_state *state)
 			argp_error(state,
 				"Block order must be in the interval [9, 20] or be zero");
 		args->block_order = ll;
+		args->debug = true;
 		break;
 
 	case 'k':
 		args->keep_file = true;
+		args->debug = true;
 		break;
 
 	case 'u':