diff --git a/news/404.bugfix b/news/404.bugfix
new file mode 100644
index 000000000..26707eee0
--- /dev/null
+++ b/news/404.bugfix
@@ -0,0 +1,2 @@
+Fix date conversion between collection query and ``expand_events`` filtering.
+[petschki]
diff --git a/plone/app/event/browser/event_listing.py b/plone/app/event/browser/event_listing.py
index 55c0f2e12..e01de7055 100644
--- a/plone/app/event/browser/event_listing.py
+++ b/plone/app/event/browser/event_listing.py
@@ -222,6 +222,13 @@ def _expand_events_start_end(self, start, end):
         # XXX: This actually fits most needs, but not all. Maybe someone
         # wants to come up with some edgecases!
         se = dict(start=None, end=None)
+
+        def safe_dt(val):
+            # convert value from DateTime to datetime
+            if hasattr(val, "asdatetime"):
+                return val.asdatetime()
+            return val
+
         if start:
             q = start.get("query")
             r = start.get("range")
@@ -238,7 +245,7 @@ def _expand_events_start_end(self, start, end):
             r = end.get("range")
             if r == "min":
                 se["start"] = q
-        return se["start"], se["end"]
+        return safe_dt(se["start"]), safe_dt(se["end"])
 
     def formatted_date(self, occ):
         provider = getMultiAdapter(
diff --git a/plone/app/event/tests/test_event_listing.py b/plone/app/event/tests/test_event_listing.py
index 5eb94662a..db67bbd80 100644
--- a/plone/app/event/tests/test_event_listing.py
+++ b/plone/app/event/tests/test_event_listing.py
@@ -1,3 +1,4 @@
+from DateTime import DateTime
 from plone.app.event.base import localized_today
 from plone.app.event.testing import make_fake_response
 from plone.app.event.testing import PAEventDX_INTEGRATION_TESTING
@@ -151,3 +152,30 @@ def test_no_date_filtering(self):
             "mode_day",
         ]:
             self.assertTrue(_class not in out)
+
+    @mock.patch("plone.app.event.browser.event_listing.localized_now", new=PN)
+    @mock.patch("plone.app.event.base.localized_now", new=PN)
+    def test_end_date_filtering(self):
+        """Test date conversion between collection query and 'expand_events'
+        filtering.
+        """
+        # plone.app.contenttypes ICollection type
+        self.portal.invokeFactory("Collection", "col_with_date_criterion", title="Col")
+        collection = self.portal.col_with_date_criterion
+        collection.query = [
+            {
+                "i": "portal_type",
+                "o": "plone.app.querystring.operation.selection.any",
+                "v": ["Event", "plone.app.event.dx.event"],
+            },
+            {
+                "i": "end",
+                "o": "plone.app.querystring.operation.date.largerThan",
+                "v": DateTime(PN()),
+            },
+        ]
+
+        view = self.portal.col_with_date_criterion.restrictedTraverse("@@event_listing")
+        view()
+
+        self.assertIs(len(self.portal.col_with_date_criterion.results()), 3)