diff --git a/src/coreutils/sleep/sleep.c b/src/coreutils/sleep/sleep.c
index 38aeb82..2d6a21a 100644
--- a/src/coreutils/sleep/sleep.c
+++ b/src/coreutils/sleep/sleep.c
@@ -5,21 +5,25 @@
 #include <unistd.h>
 #include "duration.h"
 
-int main(const int argc, const char **argv) {
-	if (argc == 1 || !strcmp(argv[argc - 1], "--help")) {
-		printf("sleep [num[m - minute / h - hour / d - days]] / [inf infinity]\n");
+int main(int argc, char **argv) {
+
+	int opt;
+	while ((opt = getopt(argc, argv, "")) != -1 || argc == 1) {
+		printf("sleep [num[SUFFIX]] or [inf Infinity]\nSUFFIXES:\n\tm - minute\n\th - hour\n\td - days\n");
 		return 0;
 	}
 
-	if (!strncasecmp(argv[1], "inf", 3))
-		for (;;)
+	argv += optind;
+	argc -= optind;
+
+	if (!strncasecmp(argv[0], "inf", 3))
+		while (1)
 			sleep(INT_MAX);
 
-	unsigned long long sec = 0;
+	unsigned long long usec = 0;
+	for (int i = 0; i < argc; i++)
+		usec += mu_parse_duration(argv[i]);
 
-	for (int i = 1; i < argc; i++)
-		sec += mu_parse_duration(argv[i]);
-
-	usleep(sec);
+	usleep(usec);
 	return 0;
 }