diff --git a/README.md b/README.md
index 2406d3d..a4251eb 100644
--- a/README.md
+++ b/README.md
@@ -62,7 +62,7 @@
 ## Installation
 
 - download released binary
-- 
+
 ## test run 
 
 run thu-learn-downloader-windows-x86_64.exe in cmd or powershell.