diff --git a/src/Illuminate/Support/Lottery.php b/src/Illuminate/Support/Lottery.php
index 1f8c80588345..183cf957c578 100644
--- a/src/Illuminate/Support/Lottery.php
+++ b/src/Illuminate/Support/Lottery.php
@@ -45,7 +45,7 @@ class Lottery
      * Create a new Lottery instance.
      *
      * @param  int|float  $chances
-     * @param  int|null  $outOf
+     * @param  int<1, max>|null  $outOf
      */
     public function __construct($chances, $outOf = null)
     {
@@ -53,6 +53,10 @@ public function __construct($chances, $outOf = null)
             throw new RuntimeException('Float must not be greater than 1.');
         }
 
+        if ($outOf !== null && $outOf < 1) {
+            throw new RuntimeException('Lottery "out of" value must be greater than or equal to 1.');
+        }
+
         $this->chances = $chances;
 
         $this->outOf = $outOf;
diff --git a/tests/Support/LotteryTest.php b/tests/Support/LotteryTest.php
index 7dc3a31d856f..e81bb8fe136f 100644
--- a/tests/Support/LotteryTest.php
+++ b/tests/Support/LotteryTest.php
@@ -154,6 +154,13 @@ public function testItThrowsForFloatsOverOne()
         new Lottery(1.1);
     }
 
+    public function testItThrowsForOutOfLessThanOne()
+    {
+        $this->expectException(RuntimeException::class);
+
+        new Lottery(1, 0);
+    }
+
     public function testItCanWinWithFloat()
     {
         $wins = false;