diff --git a/SDK/include/NDK/Application.hpp b/SDK/include/NDK/Application.hpp
index 91c1bc5da..ef697e48a 100644
--- a/SDK/include/NDK/Application.hpp
+++ b/SDK/include/NDK/Application.hpp
@@ -43,7 +43,7 @@ namespace Ndk
 			#ifndef NDK_SERVER
 			std::vector<std::unique_ptr<Nz::Window>> m_windows;
 			#endif
-			std::vector<World> m_worlds;
+			std::list<World> m_worlds;
 			Nz::Clock m_updateClock;
 			#ifndef NDK_SERVER
 			bool m_exitOnClosedWindows;