diff --git a/src/rest/cal.rs b/src/rest/cal.rs
index 3c6b5e6..9220f26 100644
--- a/src/rest/cal.rs
+++ b/src/rest/cal.rs
@@ -16,7 +16,7 @@ PRODID:-//rudernlinz.at//Trips//DE"#,
         res.push_str("\nBEGIN:VEVENT");
         res.push_str(&format!("\nUID:{}@rudernlinz.at", event.id));
         res.push_str(&format!(
-            "\nDTSTART:TZID=Europe/Vienna:{}T{}00",
+            "\nDTSTART;TZID=Europe/Vienna:{}T{}00",
             event.day.replace("-", ""),
             event.planned_starting_time.replace(":", "")
         ));