diff --git a/src/scrut.c b/src/scrut.c
index 4d5a932..39fa698 100644
--- a/src/scrut.c
+++ b/src/scrut.c
@@ -39,16 +39,15 @@ usage(char *argv0) {
 
 int main(int argc, char *argv[]) {
 	char sel[(sizeof opts) / (sizeof *opts)];
-	program_name = (argv[0] == NULL ? program_name : argv[0]);
 
-	if (argc < 2) { return usage(program_name); }
+	if (argc < 2) { return usage(argv[0] == NULL ? program_name : argv[0]); }
 
 	{ /* option parsing */
 		char *p;
 
 		memset(sel, '\0', sizeof sel);
 		for (int c; (c = getopt(argc, argv, opts)) != -1;) {
-			if ((p = strchr(opts, c)) == NULL) { return usage(program_name); }
+			if ((p = strchr(opts, c)) == NULL) { return usage(argv[0]); }
 			else { sel[p - opts] = c; }
 		}
 
@@ -62,7 +61,7 @@ int main(int argc, char *argv[]) {
 		}
 	}
 
-	if (optind == argc) { return usage(program_name); }
+	if (optind == argc) { return usage(argv[0]); }
 
 	for (argv += optind ; *argv != NULL; ++argv) {
 		struct stat buf;