diff --git a/README.md b/README.md
index 9ae106b..3b43712 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,9 @@ This work is licensed under CC BY-NC-SA 4.0. To view a copy of this license, vis
 to **Charlotte Bäcker** for the original projekt and permission to reuse and further develop it
 
 to **Felix Wittwer** for giving the orginial ABI 2017 program a new life
+
+## CONTACT
+Felix Wittwer (felix.wittwer.mail@gmail.com)
   
 ## Compatibility
 the programm is compatibale with Casio calculators of the fx-9860 GII and GIII Series