diff --git a/src/Rule/IsArrayRule.php b/src/Rule/IsArrayRule.php
index 228160e..febdc00 100644
--- a/src/Rule/IsArrayRule.php
+++ b/src/Rule/IsArrayRule.php
@@ -48,7 +48,7 @@ public function validate(array $data, string $propertyName, $item, $default = nu
             return $data;
         }
 
-        $message = (empty($message)) ? sprintf('%s must bool!', $propertyName) : $message;
+        $message = (empty($message)) ? sprintf('%s must array!', $propertyName) : $message;
         throw new ValidatorException($message);
     }
 }
\ No newline at end of file