diff --git a/xmake.lua b/xmake.lua
index 7099c33..8831cd4 100644
--- a/xmake.lua
+++ b/xmake.lua
@@ -6,7 +6,7 @@ add_requires("libsdl >= 2", "zlib", "glew")
 target("TowerDefense")
     set_kind("binary")
     add_includedirs("include")
-    add_files("src/*.cpp", "src/*/*.cpp", "src/*/*/*.cpp", "src/*/*/*/*.cpp")
+    add_files("src/**.cpp")
     add_cxflags("-pthread")
 
     add_links("pthread")