diff --git a/index.js b/index.js
index 4da59ff..f48895c 100644
--- a/index.js
+++ b/index.js
@@ -75,7 +75,7 @@ module.exports = {
     return global.envar
   },
 
-  getDynamicConfig(dynamicConfigFile='config-dynamic.js') { // dynamicConfigFile should be absolute or relative to the node process's dir.
+  getDynamicConfig(dynamicConfigFile='envar-base-dynamic.js') { // dynamicConfigFile should be absolute or relative to the node process's dir.
     const fullpath = path.join(process.cwd(), dynamicConfigFile)
     if (fs.existsSync(fullpath)) {
       delete require.cache[require.resolve(fullpath)] // delete require.cache[fullpath] 不起作用