diff --git a/src/Util/Crypto.php b/src/Util/Crypto.php
index 588be8f932..084ae567ea 100644
--- a/src/Util/Crypto.php
+++ b/src/Util/Crypto.php
@@ -299,11 +299,11 @@ class Crypto
 	 * Creates cryptographic secure random digits
 	 *
 	 * @param string $digits The count of digits
-	 * @return int The random Digits
+	 * @return string The random Digits
 	 *
 	 * @throws \Exception In case 'random_int' isn't usable
 	 */
-	public static function randomDigits($digits)
+	public static function randomDigits($digits): string
 	{
 		$rn = '';
 
@@ -312,6 +312,6 @@ class Crypto
 			$rn .= random_int(0, 9);
 		}
 
-		return (int) $rn;
+		return $rn;
 	}
 }