diff --git a/documentation/development/setting-up-the-development-environment.md b/documentation/development/setting-up-the-development-environment.md
index 14d5e067c9..8a572c1ec6 100644
--- a/documentation/development/setting-up-the-development-environment.md
+++ b/documentation/development/setting-up-the-development-environment.md
@@ -14,6 +14,7 @@ This page describes how you can setup your development environment for ACE3, all
 - Arma 3 (duh)
 - A proper installation of the Arma 3 Tools (available on Steam)
 - A properly setup P-drive
+- Run ArmA 3 and Arma 3 Tools directly from steam once to install registry entries (and again after every update)
 - Python 3.x, available [here](http://www.python.org)
 - The following Mikero Tools (available [here](https://dev.withsix.com/projects/mikero-pbodll/files)): DePBO, Rapify, MakePBO, PBOProject
 - A properly setup PATH variable (containing Python and the Mikero tools)