diff --git a/zerver/openapi/zulip.yaml b/zerver/openapi/zulip.yaml
index 3165f2e8db..e7d74a71c4 100644
--- a/zerver/openapi/zulip.yaml
+++ b/zerver/openapi/zulip.yaml
@@ -11415,15 +11415,11 @@ paths:
                         description: |
                           Present if `realm_emoji` is present in `fetch_event_types`.
 
-                          An array of dictionaries where each dictionary describes a custom
+                          A dictionary of objects where each object describes a custom
                           emoji that has been uploaded in this Zulip organization.
-                        oneOf:
-                          - type: object
-                            additionalProperties:
-                              $ref: "#/components/schemas/RealmEmoji"
-                          - type: array
-                            items:
-                              type: integer
+                        type: object
+                        additionalProperties:
+                          $ref: "#/components/schemas/RealmEmoji"
                       realm_linkifiers:
                         type: array
                         description: |
diff --git a/zerver/tests/test_event_system.py b/zerver/tests/test_event_system.py
index a86ebb728d..6363ffd1d9 100644
--- a/zerver/tests/test_event_system.py
+++ b/zerver/tests/test_event_system.py
@@ -89,7 +89,8 @@ class EventsEndpointTest(ZulipTestCase):
         # We choose realm_emoji somewhat randomly--we want
         # a "boring" event type for the purpose of this test.
         event_type = "realm_emoji"
-        test_event = dict(id=6, type=event_type, realm_emoji=[])
+        empty_realm_emoji_dict: Dict[str, Any] = {}
+        test_event = dict(id=6, type=event_type, realm_emoji=empty_realm_emoji_dict)
 
         # Test that call is made to deal with a returning soft deactivated user.
         with mock.patch("zerver.lib.events.reactivate_user_if_soft_deactivated") as fa:
@@ -122,7 +123,7 @@ class EventsEndpointTest(ZulipTestCase):
         self.assertEqual(result_dict["queue_id"], "15:12")
 
         # sanity check the data relevant to our event
-        self.assertEqual(result_dict["realm_emoji"], [])
+        self.assertEqual(result_dict["realm_emoji"], {})
 
         # Now test with `fetch_event_types` not matching the event
         return_event_queue = "15:13"
@@ -161,7 +162,7 @@ class EventsEndpointTest(ZulipTestCase):
 
         # Check that the realm_emoji data is in there.
         self.assertIn("realm_emoji", result_dict)
-        self.assertEqual(result_dict["realm_emoji"], [])
+        self.assertEqual(result_dict["realm_emoji"], {})
         self.assertEqual(result_dict["queue_id"], "15:13")
 
     def test_events_register_spectators(self) -> None: