diff --git a/metadata.yml b/metadata.yml
index 6adbd08dcb5e9d4b900ee7db43b03d19ca76ee31..2d9fcac096965bd1d52f07717cc321a858fd1cea 100644
--- a/metadata.yml
+++ b/metadata.yml
@@ -28,9 +28,10 @@ publisher:
 - affiliation: Technische UniversitÃ¤t Wien
   email: nadja.jovancevic@tuwien.ac.at
   name: Nadja Jovancevic
+subject:
+- 'TU Wien: Operating Systems'
+- 'AAU: Object-Oriented Modeling and Implementation'
 teaches:
 - Java/Data Types/Strings
-- Java/Algorithms and Algorithmic Paradigms/Recursion
-- Java/Controlflow/Conditionals/If Statements
 timeRequired: 15-30 min
 title: Zahlen umdrehen