diff --git a/INSTALL.md b/INSTALL.md
index c6e5d0fdd4..7f79537f3a 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -4,7 +4,8 @@ During generation, CMake should produce an `install` target and a `package` targ
 
 ### Install
 
-The `install` target will copy the High Fidelity targets and their dependencies to your `CMAKE_INSTALL_PREFIX`.
+The `install` target will copy the High Fidelity targets and their dependencies to your `CMAKE_INSTALL_PREFIX`.  
+This variable is set by the `project(hifi)` command in `CMakeLists.txt` to `C:/Program Files/hifi` and stored in `build/CMakeCache.txt`
 
 ### Packaging