diff --git a/slides/kube-twodays.yml b/slides/kube-twodays.yml
index 73b0ace6..221ac0c9 100644
--- a/slides/kube-twodays.yml
+++ b/slides/kube-twodays.yml
@@ -11,7 +11,7 @@ gitrepo: github.com/jpetazzo/container.training
 
 slides: http://velocity-2019-11.container.training/
 
-#slidenumberprefix: "#SomeHashTag — "
+slidenumberprefix: "#VelocityConf — "
 
 exclude:
 - self-paced