diff --git a/README.md b/README.md
index ff66f3f..49d88cf 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,8 @@
 kn-cheatsheet
 ===============
 
-Some keywords from lecture on communication nets
\ No newline at end of file
+Some keywords from lecture on communication nets
+
+Warning
+-------
+I wrote that for my state of knowledge and omitted some parts that seemd trivial. So don't take it for the full knowledge we need for the exam!