diff --git a/src/rand.c b/src/rand.c
index 8deb622..e245c78 100644
--- a/src/rand.c
+++ b/src/rand.c
@@ -1,17 +1,23 @@
 #include <stdio.h>
 #include <stdlib.h>
+#include <time.h>
+
 int random_int(int max)
 {
-return rand() % max;
+  return rand() % max;
 }
+
 int main(int argc, char *argv[])
 {
-if (argc != 2) {
-fprintf(stderr, "Usage: %s <number>\n", argv[0]);
-return EXIT_FAILURE;
-}
-int max = atoi(argv[1]);
-int result = random_int(max);
-printf("%d\n", result);
-return EXIT_SUCCESS;
+  if (argc != 2) {
+    fprintf(stderr, "Usage: %s <number>\n", argv[0]);
+    return EXIT_FAILURE;
+  }
+  int max = atoi(argv[1]);
+
+  srand(time(NULL));
+  int result = random_int(max);
+  printf("%d\n", result);
+
+  return EXIT_SUCCESS;
 }