diff --git a/README.md b/README.md
index 1e2f80d1..d7130609 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,7 @@
 
 Tutorial (in german language): https://www.heise.de/select/make/2019/1/1551099236518668
 
+[![CodeFactor](https://www.codefactor.io/repository/github/cyberman54/esp32-paxcounter/badge)](https://www.codefactor.io/repository/github/cyberman54/esp32-paxcounter)
 
 
 <img src="img/Paxcounter-title.jpg">