diff --git a/agenda/utils.py b/agenda/utils.py
index ff311d0..eb66a74 100644
--- a/agenda/utils.py
+++ b/agenda/utils.py
@@ -2,10 +2,8 @@
 
 from datetime import date, datetime, timezone
 
-DateOrDateTime = datetime | date
 
-
-def as_date(d: DateOrDateTime) -> date:
+def as_date(d: datetime | date) -> date:
     """Convert datetime to date."""
     match d:
         case datetime():
@@ -16,7 +14,7 @@ def as_date(d: DateOrDateTime) -> date:
             raise TypeError(f"Unsupported type: {type(d)}")
 
 
-def as_datetime(d: DateOrDateTime) -> datetime:
+def as_datetime(d: datetime | date) -> datetime:
     """Date/time of event."""
     match d:
         case datetime():