diff --git a/Installation.md b/Installation.md
index 889910e..117612a 100644
--- a/Installation.md
+++ b/Installation.md
@@ -1,13 +1,15 @@
 ## 7-Zip
 
-### Windows
+### Windows 7-Zip
 
-First install 7z from https://www.7-zip.org/ or with command line:
+First install the `64-bit x64` version of 7z from https://www.7-zip.org/ or with command line:
 ```
 winget install --id 7zip.7zip
 ```
 
-### Mac
+KCC expects `7z` to be installed to the default location at `C:\Program Files\7-Zip\`.
+
+### macOS 7-Zip/Unar
 with [Homebrew](https://brew.sh/) installed
 ```
 brew install p7zip