diff --git a/radicale/tests/static/event_mixed_datetime_and_date_exdate.ics b/radicale/tests/static/event_mixed_datetime_and_date_exdate.ics
new file mode 100644
index 00000000..7263daa6
--- /dev/null
+++ b/radicale/tests/static/event_mixed_datetime_and_date_exdate.ics
@@ -0,0 +1,33 @@
+BEGIN:VCALENDAR
+PRODID:-//Mozilla.org/NONSGML Mozilla Calendar V1.1//EN
+VERSION:2.0
+BEGIN:VTIMEZONE
+TZID:Europe/Paris
+X-LIC-LOCATION:Europe/Paris
+BEGIN:DAYLIGHT
+TZOFFSETFROM:+0100
+TZOFFSETTO:+0200
+TZNAME:CEST
+DTSTART:19700329T020000
+RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3
+END:DAYLIGHT
+BEGIN:STANDARD
+TZOFFSETFROM:+0200
+TZOFFSETTO:+0100
+TZNAME:CET
+DTSTART:19701025T030000
+RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
+END:STANDARD
+END:VTIMEZONE
+BEGIN:VEVENT
+CREATED:20130902T150157Z
+LAST-MODIFIED:20130902T150158Z
+DTSTAMP:20130902T150158Z
+UID:event_mixed_datetime_and_date_exdate
+SUMMARY:Event
+DTSTART:20130901T180000
+DTEND:20130901T190000
+RRULE:FREQ=DAILY;COUNT=3
+EXDATE:20130902T193000Z
+END:VEVENT
+END:VCALENDAR
diff --git a/radicale/tests/test_base.py b/radicale/tests/test_base.py
index 733031e3..d17dc70f 100644
--- a/radicale/tests/test_base.py
+++ b/radicale/tests/test_base.py
@@ -273,12 +273,18 @@ permissions: RrWw""")
         event = get_file_content("event_exdate_without_rrule.ics")
         self.put("/calendar.ics/event.ics", event)
 
-    def test_add_event_with_issue2151(self) -> None:
-        """Test event of issue#2151."""
+    def test_add_event_exdate_no_tz(self) -> None:
+        """Test event where EXDATE has no tzinfo."""
         self.mkcalendar("/calendar.ics/")
         event = get_file_content("event_issue2151.ics")
         self.put("/calendar.ics/event_issue2151.ics", event)
 
+    def test_add_event_dtstart_no_tz_exdate_tz(self) -> None:
+        """Test event where DTSTART has no tzinfo but EXDATE."""
+        self.mkcalendar("/calendar.ics/")
+        event = get_file_content("event_mixed_datetime_and_date_exdate.ics")
+        self.put("/calendar.ics/event_mixed_datetime_and_date_exdate.ics", event)
+
     def test_add_todo(self) -> None:
         """Add a todo."""
         self.mkcalendar("/calendar.ics/")