diff --git a/shadowsocks-csharp/app.manifest b/shadowsocks-csharp/app.manifest
index 6294c259..9050e27f 100755
--- a/shadowsocks-csharp/app.manifest
+++ b/shadowsocks-csharp/app.manifest
@@ -31,7 +31,7 @@
       <!--<supportedOS Id="{e2011457-1546-43c5-a5fe-008deee3d3f0}" />-->
 
       <!-- Windows 7 -->
-      <!--<supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}" />-->
+      <supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}" />
 
       <!-- Windows 8 -->
       <supportedOS Id="{4a2f28e3-53b9-4441-ba9c-d69d4a4a6e38}" />