diff --git a/QHF-April-2021.md b/QHF-April-2021.md
index b62a871..fd2b6cf 100644
--- a/QHF-April-2021.md
+++ b/QHF-April-2021.md
@@ -1,4 +1,4 @@
-# QGIS Open Day - Usergroup day (30.04.21)
+# QGIS Open Day - Usergroup day (2021-04-30)
 
 This month QGIS Open Day is dedicated to QGIS around the world. QGIS user groups are called to report on their activity and show off their QGIS awesomeness! (see https://lists.osgeo.org/pipermail/qgis-psc/2021-February/009263.html for the invitation)