diff --git a/max.c b/max.c
--- a/max.c
+++ b/max.c
@@ -17,7 +17,7 @@
     unsigned int b;
 
     if (argc != 3) {
-        printf ("Usage: %s value1 value2\n", argv[0]);
+        printf ("Usage: %s <integer> <integer>\n", argv[0]);
         return EXIT_FAILURE;
     }
     a = atoi (argv[1]);