diff --git a/seminar.md b/seminar.md
index 9ba363f8e4b16eb1f6b1b87dcc1589c9aa6143d2..cdd8995e0de440ba724824b98b7329b4a5c12f7b 100644
--- a/seminar.md
+++ b/seminar.md
@@ -36,7 +36,7 @@ and a mattermost channel for chat. To join the mattermost channel:
 |2021-01-18| Jan Frederik Schaefer | A Symbolic Framework for Mathematical Language Understanding ([slides](https://github.com/jfschaefer/slides/blob/master/2021/sigmathling/slides.pdf)) |
 |2021-02-01| Takuto Asakura | Towards Grounding of Formulae |
 |2021-02-15| ? | ? |
-|2021-03-01| ? | ? |
+|2021-03-01| Bernhard Schröder | Something about proof structures? |
 |2021-03-15| ? | ? |
 |2021-03-29| ? | ? |