diff --git a/example/test_calendar.yaml b/example/test_calendar.yaml
index 2efd18c..a808127 100644
--- a/example/test_calendar.yaml
+++ b/example/test_calendar.yaml
@@ -35,12 +35,12 @@ events:
 
   - summary: Recurring event with exception
     begin: 2022-07-01 10:00:00
-    duration: {minutes: 60}
+    duration: { minutes: 60 }
     repeat:
       interval:
         # seconds, minutes, hours, days, weeks, months, years
         hours: 4
-      until: 2022-07-31  # required
+      until: 2022-07-31 # required
       except_on:
         - 2022-07-13
         - 2022-07-14 06:00:00