diff --git a/seminar.md b/seminar.md
index a2cd0a40545500a1db3a09ade5ff68c9a18e0b3a..6a3c3b6a763cf09ab780198a3ae8146003402778 100644
--- a/seminar.md
+++ b/seminar.md
@@ -37,8 +37,8 @@ and a mattermost channel for chat. To join the mattermost channel:
 |2021-01-04| - | cancelled (too close to New Year) |
 |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 ([slides](https://drive.google.com/file/d/1JxNKW5M0KKYeBeL6Umsg6ZKBNzdCV_DC/view)) |
-|2021-02-15| ? | cancelled |
-|2021-03-01| Bernhard Schröder | Something about proof structures? |
+|2021-02-15| - | cancelled |
+|2021-03-01| Bernhard Schröder | Framed proofs -- Linguistic aspects of proof texts and frames |
 |2021-03-15| Peter Koepke | Isabelle-Naproche |
 |2021-03-29| André Greiner-Petter | TBD |