diff --git a/systems/kat.md b/systems/kat.md
index 7750b5c2c94b0a87c7dfc47b18fd51f10792e7bf..3330f92296bbd908f3d9124185ba5769fe779260 100644
--- a/systems/kat.md
+++ b/systems/kat.md
@@ -8,7 +8,7 @@ start_date: 2013-06
 
 people:
 	- mkohlhase
-    - twiesing
+	- twiesing
 
 repository: https://github.com/KWARC/KAT 
 ---