diff --git a/content/r&R-jan-21-en.md b/content/r&R-jan-21-en.md
index a2dd0c11..f4d8cc3c 100644
--- a/content/r&R-jan-21-en.md
+++ b/content/r&R-jan-21-en.md
@@ -4,7 +4,7 @@ Category: readrepair
 Slug: rr-wireless-imagination-1
 lang: en
 event_start: 2021-01-31 10:30
-event_duration: 1h30
+event_duration: 1h30min
 featured_image:/images/rr-wireless-1.jpg
 summary: Every last Sunday of the month the Varia library and Rotterdam Electronics Depot are open. In 2021 our Read & Repair sessions will be paired, we will take two months to explore one theme. During January and February 2021, we will be exploring the theme Wireless Imagination. The text selection for January was made by Varia Library group member Danny van der Kleij.