diff --git a/src/strcmp.c b/src/strcmp.c
index ea20b1e..6d930d5 100644
--- a/src/strcmp.c
+++ b/src/strcmp.c
@@ -26,18 +26,22 @@
 char *program_name = "strcmp";
 
 int main(int argc, char *argv[]) {
-	program_name = argv[0] == NULL ? program_name : argv[0];
-	int i;
+	unsigned int i;
 
 #ifdef __OpenBSD__
 	if (pledge("stdio", NULL) == -1) {
-		perror(program_name);
+		perror(argv[0] == NULL ? program_name : argv[0]);
+
 		return EX_OSERR;
 	}
 #endif
 
 	if (argc < 3) {
-		(void)fprintf(stderr, "Usage: %s string string...\n", program_name);
+		(void)fprintf(
+			stderr,
+			"Usage: %s string string...\n",
+			argv[0] == NULL ? program_name : argv[0]
+		);
 
 		return EX_USAGE;
 	}