diff --git a/types/office-js/index.d.ts b/types/office-js/index.d.ts
index c9b5e987e9..eefb9c265d 100644
--- a/types/office-js/index.d.ts
+++ b/types/office-js/index.d.ts
@@ -1875,7 +1875,7 @@ declare namespace Office {
          */
         ActiveViewChanged,
         /**
-         * Triggers when the appointment date or time of the selected series was changed in Outlook.
+         * Triggers when the appointment date or time of the selected series is changed in Outlook.
          * 
          * [Api set: Mailbox Preview]
          * 
@@ -1934,11 +1934,11 @@ declare namespace Office {
          */
         DialogMessageReceived,
         /**
-         * Triggers when Dialog has a event, such as dialog closed, dialog navigation failed.
+         * Triggers when Dialog has an event, such as dialog closed or dialog navigation failed.
          */
         DialogEventReceived,
         /**
-         * Triggers when a document level selection happens
+         * Triggers when a document-level selection happens.
          * 
          * **Support details**
          * 
@@ -1957,25 +1957,25 @@ declare namespace Office {
          */
         DocumentSelectionChanged,
         /**
-         * Triggers when the selected Outlook item was changed.
+         * Triggers when the selected Outlook item is changed.
          * 
          * [Api set: Mailbox 1.1]
          */
         ItemChanged,
         /**
-         * Triggers when a customXmlPart node was deleted.
+         * Triggers when a customXmlPart node is deleted.
          */
         NodeDeleted,
         /**
-         * Triggers when a customXmlPart node was inserted.
+         * Triggers when a customXmlPart node is inserted.
          */
         NodeInserted,
         /**
-         * Triggers when a customXmlPart node was replaced.
+         * Triggers when a customXmlPart node is replaced.
          */
         NodeReplaced,
         /**
-         * Triggers when the OfficeTheme was changed in Outlook.
+         * Triggers when the OfficeTheme is changed in Outlook.
          * 
          * [Api set: Mailbox Preview]
          * 
@@ -1983,7 +1983,7 @@ declare namespace Office {
          */
         OfficeThemeChanged,
         /**
-         * Triggers when the recipient list of the selected item was changed in Outlook.
+         * Triggers when the recipient list of the selected item is changed in Outlook.
          * 
          * [Api set: Mailbox Preview]
          * 
@@ -1991,7 +1991,7 @@ declare namespace Office {
          */
         RecipientsChanged,
         /**
-         * Triggers when the recurrence pattern of the selected series was changed in Outlook.
+         * Triggers when the recurrence pattern of the selected series is changed in Outlook.
          * 
          * [Api set: Mailbox Preview]
          *