diff --git a/source/_integrations/calendar.markdown b/source/_integrations/calendar.markdown
index fe98688f191..753eac6aa47 100644
--- a/source/_integrations/calendar.markdown
+++ b/source/_integrations/calendar.markdown
@@ -156,9 +156,9 @@ Add a new calendar event. A calendar `target` is selected with a [Target Selecto
 | `summary` | no | Acts as the title of the event. | Bowling
 | `description` | yes | The description of the event. | Birthday bowling
 | `start_date_time` | yes | The date and time the event should start. | 2019-03-10 20:00:00
-| `end_date_time` | yes | The date and time the event should end. | 2019-03-10 23:00:00
+| `end_date_time` | yes | The date and time the event should end (exclusive). | 2019-03-10 23:00:00
 | `start_date` | yes | The date the whole day event should start. | 2019-03-10
-| `end_date` | yes | The date the whole day event should end. | 2019-03-11
+| `end_date` | yes | The date the whole day event should end (exclusive). | 2019-03-11
 | `in` | yes | Days or weeks that you want to create the event in. | "days": 2