diff --git a/xmake.lua b/xmake.lua
index 53aed809..3ab52476 100644
--- a/xmake.lua
+++ b/xmake.lua
@@ -17,7 +17,7 @@ if is_plat("mingw") and is_host("windows") then
     set_toolchains("mingw@mingw-w64")
 end
 
-if is_plat("wasm") then
+if is_plat("wasm") and not has_config("toolchain") then
     add_requires("emscripten 3.1.25")
     set_toolchains("emcc@emscripten")
 end