diff --git a/src/A.php b/src/A.php
index 2b38a1c..0cc884c 100644
--- a/src/A.php
+++ b/src/A.php
@@ -361,7 +361,7 @@ public static function pickRandom(array $data)
     }
 
     // A::pickRandoms(2, [1, 2, 3, 4, 5]) -> [5, 2]
-    public static function pickRandoms(int $amount = 1, array $data): array
+    public static function pickRandoms(int $amount, array $data): array
     {
         if (self::isEmpty($data) || $amount <= 0) {
             return [];