diff --git a/core/templates/403.php b/core/templates/403.php
index e053fad764a5f..72d5d3e4ae63b 100644
--- a/core/templates/403.php
+++ b/core/templates/403.php
@@ -12,6 +12,6 @@
 <ul>
 	<li class='error'>
 		<?php p($l->t( 'Access forbidden' )); ?><br>
-		<p class='hint'><?php if(isset($_['file'])) p($_['file'])?></p>
+		<p class='hint'><?php if(isset($_['message'])) p($_['message'])?></p>
 	</li>
 </ul>
diff --git a/lib/private/AppFramework/Middleware/Security/SecurityMiddleware.php b/lib/private/AppFramework/Middleware/Security/SecurityMiddleware.php
index 2eedc39c3aba2..87954ccc1cb27 100644
--- a/lib/private/AppFramework/Middleware/Security/SecurityMiddleware.php
+++ b/lib/private/AppFramework/Middleware/Security/SecurityMiddleware.php
@@ -249,7 +249,7 @@ public function afterException($controller, $methodName, \Exception $exception):
 					$url = $this->urlGenerator->linkToRoute('core.login.showLoginForm', $params);
 					$response = new RedirectResponse($url);
 				} else {
-					$response = new TemplateResponse('core', '403', ['file' => $exception->getMessage()], 'guest');
+					$response = new TemplateResponse('core', '403', ['message' => $exception->getMessage()], 'guest');
 					$response->setStatus($exception->getCode());
 				}
 			}
diff --git a/tests/lib/AppFramework/Middleware/Security/SecurityMiddlewareTest.php b/tests/lib/AppFramework/Middleware/Security/SecurityMiddlewareTest.php
index f51f7e9a1c60e..13c5379b142fb 100644
--- a/tests/lib/AppFramework/Middleware/Security/SecurityMiddlewareTest.php
+++ b/tests/lib/AppFramework/Middleware/Security/SecurityMiddlewareTest.php
@@ -568,7 +568,7 @@ public function testAfterExceptionReturnsTemplateResponse(SecurityException $exc
 			'test',
 			$exception
 		);
-		$expected = new TemplateResponse('core', '403', ['file' => $exception->getMessage()], 'guest');
+		$expected = new TemplateResponse('core', '403', ['message' => $exception->getMessage()], 'guest');
 		$expected->setStatus($exception->getCode());
 		$this->assertEquals($expected , $response);
 	}