diff --git a/_data/sidebars/resources.yml b/_data/sidebars/resources.yml
index bfa17f4..b330988 100644
--- a/_data/sidebars/resources.yml
+++ b/_data/sidebars/resources.yml
@@ -2,7 +2,7 @@ title: Resources
 title_url: /resources
 subitems:
   - title: TeSS
-    url: /teSS
+    url: /TeSS
   - title: Tango
     url: /tango
   - title: Train-the-Trainer