diff --git a/src/Validator/Validator.php b/src/Validator/Validator.php
index d2af096..95ed783 100644
--- a/src/Validator/Validator.php
+++ b/src/Validator/Validator.php
@@ -63,7 +63,7 @@ class Validator
 			$data = $request->getQueryParams();
 		}
 		foreach ($data as $key => $value) {
-			if (method_exists($this->formData, $key)) {
+			if (property_exists($this->formData, $key)) {
 				$this->formData->{$key} = $value;
 			}
 		}