diff --git a/docs/courses/icbo2023.md b/docs/courses/icbo2023.md
index aaef42c84..1f23424a5 100644
--- a/docs/courses/icbo2023.md
+++ b/docs/courses/icbo2023.md
@@ -58,7 +58,7 @@ The tutorial is designed to be 'show and tell' format, but you are welcome to in
 
 | Time | Topic | Presenter | Duration |
 | ----------- | ---- | ---- | ---- |
-| 13:30 pm ET  | Welcome | [Tiago Lubiana](https://orcid.org/0000-0003-2473-2313) and [Nico Matentzoglu](https://orcid.org/0000-0002-7356-1779) | 5 min |
+| 13:30 pm ET  | Welcome | [Tiago Lubiana](https://orcid.org/0000-0003-2473-2313) | 10 min |
 | 13:40 pm ET | Introduction to OBO, its community, principles, resources, and best practices | [Darren Natale](https://orcid.org/0000-0001-5809-9523) | 20 min |
 | 14:00 pm ET | Hands-on lesson in basic tools | [Sabrina Toro](https://orcid.org/0000-0002-4142-7153) | 40 min |
 | 14:40 pm ET | Protege updates and new features | [Damien Goutte-Gattat](https://orcid.org/0000-0002-6095-8718) | 20 min |