diff --git a/_config.yml b/_config.yml
index fae56ee62ab8732f690d118795bc062e4351e221..8d3a479e853a176ffc04cec94d3595cb0fe64ebe 100644
--- a/_config.yml
+++ b/_config.yml
@@ -63,7 +63,7 @@ semesters:
         - Spring17
         - WS16/17
         - SS17
-	- WS17/18
+        - WS17/18
     current: SS18
     upcoming: WS18/19