diff --git a/test_files/recurrence-mixed-with-and-without-tz.ics b/test_files/recurrence-mixed-with-and-without-tz.ics
new file mode 100644
index 0000000..a99adc4
--- /dev/null
+++ b/test_files/recurrence-mixed-with-and-without-tz.ics
@@ -0,0 +1,49 @@
+BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:-//Mozilla.org/NONSGML Mozilla Calendar V1.1//EN
+
+BEGIN:VTIMEZONE
+TZID:Europe/Berlin
+BEGIN:STANDARD
+DTSTART:19701025T030000
+RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
+TZNAME:CET
+TZOFFSETFROM:+0200
+TZOFFSETTO:+0100
+END:STANDARD
+BEGIN:DAYLIGHT
+DTSTART:19700329T020000
+RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3
+TZNAME:CEST
+TZOFFSETFROM:+0100
+TZOFFSETTO:+0200
+END:DAYLIGHT
+END:VTIMEZONE
+
+BEGIN:VEVENT
+UID:24151946-f737-44b2-eeee-a85f560944b0
+DTSTAMP:19910520T070708Z
+DTSTART;VALUE=DATE:19910520
+DTEND;VALUE=DATE:19910521
+CREATED:20101031T171909Z
+DESCRIPTION:
+EXDATE;VALUE=DATE-TIME:19920520T000000Z
+RRULE:FREQ=YEARLY;WKST=MO;UNTIL=19940519T235959Z;BYMONTH=5;BYMONTHDAY=20
+SUMMARY:Test
+END:VEVENT
+
+BEGIN:VEVENT
+DTSTAMP:20171023T070708Z
+CREATED:20171023T070428Z
+UID:24151946-f737-44b2-9db5-a85f560944b0
+SEQUENCE:2
+LAST-MODIFIED:20171023T070708Z
+SUMMARY:EES Praktikum
+RRULE:FREQ=WEEKLY;UNTIL=20171115T120000Z;BYDAY=WE
+EXDATE;VALUE=DATE:20171101
+DTSTART;TZID=Europe/Berlin:20171025T140000
+DTEND;TZID=Europe/Berlin:20171025T183000
+TRANSP:OPAQUE
+END:VEVENT
+
+END:VCALENDAR
diff --git a/tests.py b/tests.py
index fcab478..a97630a 100644
--- a/tests.py
+++ b/tests.py
@@ -828,6 +828,24 @@ def test_recurrence_offset_naive(self):
         self.assertEqual(dates[1], datetime.datetime(2013, 1, 24, 0, 0))
         self.assertEqual(dates[-1], datetime.datetime(2013, 3, 28, 0, 0))
 
+    def test_recurrence_mixed_with_and_without_tz(self):
+        """
+        Ensure recurring vevent with DTSTART and EXDATE not both have or
+        not have timezone information is parsing.
+        """
+        test_file = get_test_file("recurrence-mixed-with-and-without-tz.ics")
+        vcalendar = base.readOne(test_file, validate=True)
+        expected = None
+        for vobj in vcalendar.getChildren():
+            if vobj.name == 'VTIMEZONE':
+                expected = iter([
+                    [datetime.datetime(1991,  5, 20,  0, 0, 0),
+                     datetime.datetime(1993,  5, 20,  0, 0, 0)],
+                    [datetime.datetime(2017, 10, 25, 14, 0, 0, tzinfo=vobj.gettzinfo()),
+                     datetime.datetime(2017, 11,  8, 14, 0, 0, tzinfo=vobj.gettzinfo())]]);
+            elif vobj.name == 'VEVENT':
+                dates = list(vobj.getrruleset(addRDate=True))
+                self.assertEqual(dates, next(expected))
 
 class TestChangeTZ(unittest.TestCase):
     """
diff --git a/vobject/icalendar.py b/vobject/icalendar.py
index a44fffb..8a26367 100644
--- a/vobject/icalendar.py
+++ b/vobject/icalendar.py
@@ -430,12 +430,23 @@ def getrruleset(self, addRDate=False):
                         logging.error('failed to find DUE at all.')
                         return None
 
+                if isinstance(dtstart, datetime.datetime):
+                    dtstart_tzinfo = dtstart.tzinfo
+                else:
+                    dtstart_tzinfo = None
                 if name in DATENAMES:
                     if type(line.value[0]) == datetime.datetime:
-                        list(map(addfunc, line.value))
+                        for dt in line.value:
+                            if dtstart_tzinfo is None:
+                                addfunc(dt.replace(tzinfo=None))
+                            else:
+                                addfunc(dt)
                     elif type(line.value[0]) == datetime.date:
                         for dt in line.value:
-                            addfunc(datetime.datetime(dt.year, dt.month, dt.day))
+                            if isinstance(dtstart, datetime.datetime):
+                                addfunc(dtstart.replace(dt.year, dt.month, dt.day))
+                            else:
+                                addfunc(datetime.datetime(dt.year, dt.month, dt.day, tzinfo=dtstart_tzinfo))
                     else:
                         # ignore RDATEs with PERIOD values for now
                         pass