diff --git a/spec/22/speakers.yaml b/spec/22/speakers.yaml
index 5c72dd0..653174c 100644
--- a/spec/22/speakers.yaml
+++ b/spec/22/speakers.yaml
@@ -461,7 +461,6 @@
 
 - id: jan-malina
   name: Jan Malina 
-  nickname: Metall
   orgs: |
     Průvodce na [Scioškole v Nuslích](https://praha4.scioskola.cz/)
   country: cz