diff --git a/_index.yaml b/_index.yaml
index 0c33e82..e531bce 100644
--- a/_index.yaml
+++ b/_index.yaml
@@ -38,8 +38,8 @@ theses:
   instances:
     - { tag: school, school: "IfI" }
 
-theses-medien:
-  graph-file: theses-medien.yaml
+theses-media:
+  graph-file: theses-media.yaml
   category: "theses"
   definition-scope: school
   definition-description: