diff --git a/admin-guide/virtual_machines.md b/admin-guide/virtual_machines.md
index 04ddb9f2..01537630 100644
--- a/admin-guide/virtual_machines.md
+++ b/admin-guide/virtual_machines.md
@@ -25,7 +25,6 @@ You need to pay for the VM[^1] except:
 
 A SLA document[^2] will be prepared which shows the annual costs.
 
-## References
 
 [^1]: according to Peter Hüsser (12.09.2023), latest definition see: `smb://fs03/AITvirtualization/SLA/wer_bezahlt.docx`