diff --git a/INSTALL.txt b/INSTALL.txt
index a5f699d..f9564b3 100644
--- a/INSTALL.txt
+++ b/INSTALL.txt
@@ -11,3 +11,7 @@ Steps:
  - If you have any troubles, it is probably due to your MySQL database. Set "$debug" to 1 in `req.php`, delete `config.php`,
    and try to install again. MySQL will show what errors are causing the problem.
  - Additionally, please read the README.md file for troubleshooting, requirements, and more.
+ 
+ IIS:
+ 
+ If you are using IIS, please append web.config.example to your web.config file.