diff --git a/src/ValidationTrait.php b/src/ValidationTrait.php
index 5cf036d..a3661a4 100644
--- a/src/ValidationTrait.php
+++ b/src/ValidationTrait.php
@@ -332,7 +332,8 @@ protected function fieldValidate(string $field, $value, string $validator, array
 
             // File resource check
         } elseif (self::isCheckFile($validator)) {
-            $passed = $this->$validator($field, ...array_values($args));
+            $method = "{$validator}Validator";
+            $passed = $this->$method($field, ...array_values($args));
 
             // other required* methods
         } elseif (method_exists($this, $validator)) {