Add fatal: prefix to fatal error messages.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/opts.c b/src/opts.c
index 3237642..72f5ce0 100644
--- a/src/opts.c
+++ b/src/opts.c
@@ -45,13 +45,13 @@ void parse_opts(int argc, char * const *argv) {
 			case 'd': opts.outdir = optarg; break;
 			case 'x': add_exclude(optarg); break;
 			default:
-				fprintf(stderr, "%s: invalid option (try -h or --help)\n", self);
+				fprintf(stderr, "%s: fatal: invalid option (try -h or --help)\n", self);
 				exit(1);
 		}
 	}
 
 	if(optind >= argc) {
-		fprintf(stderr, "%s: missing alf file argument (try -h or --help)\n", self);
+		fprintf(stderr, "%s: fatal: missing alf file argument (try -h or --help)\n", self);
 		exit(1);
 	}