diff --git a/README.md b/README.md
index ba6a189..1d2185b 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,8 @@ CORE is only useful for new projects. Already existing projects could break beca
 - Logging should be handled using the CORE logger
 
 # How to install
-- Clone CORE into your project root using `git clone https://git.staropensource.de/StarOpenSource/core.git CORE`
+- Clone CORE into your project root using `git clone https://git.staropensource.de/StarOpenSource/core.git CORE` \
+  **NOTE:** Please execute `git submodule init` and then `git submodule add https://git.staropensource.de/staropensource/core.git CORE` instead if you are using a git repository for your app/game already.
 - Remove any autoload singletons
 - Add three scripts to your autoload:
 | Name         | Path                         |