diff --git a/src/Controllers/Controller.php b/src/Controllers/Controller.php
index bd0d98b..bbccdd9 100644
--- a/src/Controllers/Controller.php
+++ b/src/Controllers/Controller.php
@@ -209,7 +209,9 @@ protected function process(): ?BaseResponse
 
 			return null;
 		} catch (ResponseException $responseException) {
-			$this->getHttpResponse()->setCode($responseException->getCode());
+			if ($responseException->getCode() >= 100 && $responseException->getCode() < 600) {
+				$this->getHttpResponse()->setCode($responseException->getCode());
+			}
 
 			$result = $responseException instanceof ValidationException
 				? new ValidationErrorResponse($responseException)