diff --git a/events/importer.py b/events/importer.py
index e47775060..fe04d35f5 100644
--- a/events/importer.py
+++ b/events/importer.py
@@ -22,7 +22,13 @@ def import_occurrence(self, event, event_data):
         # but won't add any timezone information. We will convert them to
         # aware datetime objects manually.
         dt_start = extract_date_or_datetime(event_data['DTSTART'].dt)
-        dt_end = extract_date_or_datetime(event_data['DTEND'].dt)
+        if 'DTEND' in event_data:
+            # DTEND is not always set on events, in particular it seems that
+            # events which have the same start and end time, don't provide
+            # DTEND.  See #2021.
+            dt_end = extract_date_or_datetime(event_data['DTEND'].dt)
+        else:
+            dt_end = dt_start
 
         # Let's mark those occurrences as 'all-day'.
         all_day = (
diff --git a/events/models.py b/events/models.py
index 23269884d..1f2ab2cb0 100644
--- a/events/models.py
+++ b/events/models.py
@@ -244,7 +244,7 @@ class OccurringRule(RuleMixin, models.Model):
 
     def __str__(self):
         strftime = settings.SHORT_DATETIME_FORMAT
-        return f'{self.event.title} {date(self.dt_start.strftime, strftime)} - {date(self.dt_end.strftime, strftime)}'
+        return f'{self.event.title} {date(self.dt_start, strftime)} - {date(self.dt_end, strftime)}'
 
     @property
     def begin(self):
@@ -290,8 +290,8 @@ class RecurringRule(RuleMixin, models.Model):
     all_day = models.BooleanField(default=False)
 
     def __str__(self):
-        strftime = settings.SHORT_DATETIME_FORMAT
-        return f'{self.event.title} every {timedelta_nice_repr(self.interval)} since {date(self.dt_start.strftime, strftime)}'
+        return (f'{self.event.title} every {timedelta_nice_repr(self.freq_interval_as_timedelta)} since '
+                f'{date(self.dt_start, settings.SHORT_DATETIME_FORMAT)}')
 
     def to_rrule(self):
         return rrule(
diff --git a/templates/base.html b/templates/base.html
index b9f3df9c6..578dc1204 100644
--- a/templates/base.html
+++ b/templates/base.html
@@ -66,7 +66,7 @@
     <link rel="apple-touch-icon" href="{{ STATIC_URL }}apple-touch-icon-precomposed.png">
 
     {# Tile icon for Win8 (144x144 + tile color) #}
-    <meta name="msapplication-TileImage" content="{{ STATIC_URL }}metro-icon-144x144-precomposed.png"><!-- white shape -->
+    <meta name="msapplication-TileImage" content="{{ STATIC_URL }}metro-icon-144x144.png"><!-- white shape -->
     <meta name="msapplication-TileColor" content="#3673a5"><!-- python blue -->
     <meta name="msapplication-navbutton-color" content="#3673a5">