diff --git a/metadata/de.steinpfeffer.rdt.yml b/metadata/de.steinpfeffer.rdt.yml
index 1948baf8d1..fe74d16941 100644
--- a/metadata/de.steinpfeffer.rdt.yml
+++ b/metadata/de.steinpfeffer.rdt.yml
@@ -1,6 +1,5 @@
 Categories:
   - Science & Education
-  - Science & Education
 License: Apache-2.0
 SourceCode: https://github.com/jufickel/rdt
 IssueTracker: https://github.com/jufickel/rdt/issues