diff --git a/doc/CREDITS b/doc/CREDITS
index 87ffbf4e6..fc221d6c4 100644
--- a/doc/CREDITS
+++ b/doc/CREDITS
@@ -44,3 +44,5 @@ Cong Xu
 	Enhancements and new features
 Tobias Johansson
 	Made the Android port
+Clemens Hackenberg
+	Testing and bug reports