diff --git a/src/Core/Renderer.php b/src/Core/Renderer.php
index d0c970b9fb..40b3fb1186 100644
--- a/src/Core/Renderer.php
+++ b/src/Core/Renderer.php
@@ -73,7 +73,7 @@ class Renderer
 	 * @return string
 	 * @throws InternalServerErrorException
 	 */
-	public static function replaceMacros(string $template, array $vars)
+	public static function replaceMacros(string $template, array $vars = [])
 	{
 		$stamp1 = microtime(true);