diff --git a/src/Service/Router.php b/src/Service/Router.php
index a2a4975..71c0e8e 100644
--- a/src/Service/Router.php
+++ b/src/Service/Router.php
@@ -44,7 +44,7 @@ class Router
         $parameters = $matches[0];
 
         // create regex for route:
-        $regex = preg_replace(pattern: '/{(?<=).+?(?=)}/', replacement: '([a-zA-Z0-9]*)', subject: $route);
+        $regex = preg_replace(pattern: '/{.+?}/', replacement: '([a-zA-Z0-9]*)', subject: $route);
         $regex = '/^' . str_replace(search: "/", replace: '\\/', subject: $regex) . '$/i';
 
         $route = new Route(name: $name, route: $route, regEx: $regex, parameters: $parameters, callback: $callback);