diff --git a/src/intcmp.c b/src/intcmp.c
index ce4a5e0..961b8a9 100644
--- a/src/intcmp.c
+++ b/src/intcmp.c
@@ -21,7 +21,7 @@
 #include <stdio.h> /* fprintf(3), stderr */
 #include <stdlib.h> /* strtol(3), size_t, EXIT_FAILURE */
 #include <unistd.h> /* getopt(3), optind */
-#include <sysexits.h>
+#include <sysexits.h> /* EX_OK, EX_USAGE */
 
 /* 0b00? */		/*         Equal                       | -e  | 0b001 | 1 */
 #define EQUAL	0x01	/* Greater                     | -g  | 0b010 | 2 */
@@ -48,7 +48,7 @@ int main(int argc, char *argv[]) {
 
 	mode = 0;
 
-	if(argc < 3) { return usage(argv[0]); }
+	if (argc == 0 | argc < 3) { return usage(argv[0]); }
 
 	while ((c = getopt(argc, argv, "egl")) != -1) {
 		switch(c){