diff --git a/LengthValidator.php b/LengthValidator.php
index d7332b5..cf548a9 100644
--- a/LengthValidator.php
+++ b/LengthValidator.php
@@ -35,9 +35,9 @@ class LengthValidator extends BaseValidator
 				}
 			}
 			return match ($method) {
-				self::MAX_LENGTH => $this->maxLength($field, $value),
-				self::MIN_LENGTH => $this->minLength($field, $value),
-				default => $this->defaultLength($field, $value),
+				self::MAX_LENGTH => $this->maxLength($field, (string)$value),
+				self::MIN_LENGTH => $this->minLength($field, (string)$value),
+				default => $this->defaultLength($field, (string)$value),
 			};
 		}, $this->params, strtolower($this->method), $this->value);
 	}
diff --git a/Validator.php b/Validator.php
index b323e77..f588e1a 100644
--- a/Validator.php
+++ b/Validator.php
@@ -87,11 +87,11 @@ class Validator extends BaseValidator
 			'class'  => 'validator\TypesOfValidator',
 			'method' => TypesOfValidator::SERIALIZE,
 		],
-		'maxLength' => [
+		'maxlength' => [
 			'class'  => 'validator\LengthValidator',
 			'method' => 'max',
 		],
-		'minLength' => [
+		'minlength' => [
 			'class'  => 'validator\LengthValidator',
 			'method' => 'min',
 		],