diff --git a/template/scripts/initServer.js b/template/scripts/initServer.js
index 9a1a671..0036e77 100644
--- a/template/scripts/initServer.js
+++ b/template/scripts/initServer.js
@@ -4,7 +4,7 @@ const assert = require('assert');
 const pwd = process.cwd();
 
 const ifExists = process.argv[2];
-assert(['drop' , 'omit' , 'dropIfNotStatic'].includes(ifExists), "第二个参数只能是'drop' | 'omit' | 'dropIfNotStatic'");
+assert(!ifExists || ['drop' , 'omit' , 'dropIfNotStatic'].includes(ifExists), "第二个参数只能是'drop' | 'omit' | 'dropIfNotStatic'");
 
 initialize(
     pwd,