diff --git a/README.md b/README.md
index c8d12248300927b6a0755a10e36e0f4ef82de637..7aff34d1779fd7c157ebd4de45c4ec36bc819973 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,8 @@
 * Source files in the L5 language need to end with ".l5"
 * Every clause needs to be in a seperate line.
 * One clause must be written in exactly one line. Empty lines are allowed, too.
+* The xecutables in this repository are intended to work on Windows.
+* Using GHC, the Haskell source files (Main modules) may be executed on any operating system.
 
 ### ML:
 * No errors have been recognized yet. No negations are accepted.