diff --git a/include/authentication.hpp b/include/authentication.hpp
index 3d026f3..c71b5ec 100644
--- a/include/authentication.hpp
+++ b/include/authentication.hpp
@@ -231,8 +231,7 @@
         {
             return true;
         }
-        if (crow::webroutes::routes.find(std::string(url)) !=
-            crow::webroutes::routes.end())
+        if (crow::webroutes::routes.contains(std::string(url)))
         {
             return true;
         }