diff --git a/src/Faker/Core/Number.php b/src/Faker/Core/Number.php
index f67c042675..4de4dc73cd 100644
--- a/src/Faker/Core/Number.php
+++ b/src/Faker/Core/Number.php
@@ -26,7 +26,7 @@ public function randomDigit(): int
 
     public function randomDigitNot(int $except): int
     {
-        $result = self::numberBetween(0, 8);
+        $result = $this->numberBetween(0, 8);
 
         if ($result >= $except) {
             ++$result;