diff --git a/calendar/base/public/calIAttendee.idl b/calendar/base/public/calIAttendee.idl
index 436efd06749..1ffbc6d7a62 100644
--- a/calendar/base/public/calIAttendee.idl
+++ b/calendar/base/public/calIAttendee.idl
@@ -58,9 +58,9 @@ interface calIAttendee : nsISupports
 
   /**
    * CHAIR
-   * REQUIRED_PARTICIPANT
-   * OPTIONAL_PARTICIPANT
-   * NON_PARTICIPANT
+   * REQ-PARTICIPANT
+   * OPT-PARTICIPANT
+   * NON-PARTICIPANT
    */
   attribute AUTF8String    role;
 
@@ -71,7 +71,7 @@ interface calIAttendee : nsISupports
    * TENTATIVE
    * DELEGATED
    * COMPLETED
-   * INPROCESS
+   * IN-PROCESS
    */
   attribute AUTF8String    participationStatus;
 
diff --git a/calendar/base/public/calICalendar.idl b/calendar/base/public/calICalendar.idl
index 0bebb7c2b5a..1b920d10c9d 100644
--- a/calendar/base/public/calICalendar.idl
+++ b/calendar/base/public/calICalendar.idl
@@ -413,7 +413,7 @@ interface calIOperationListener : nsISupports
                            in string aId,
                            in nsIVariant aDetail);
   const unsigned long ADD = 1;
-  const unsigned long MOVE = 2;
+  const unsigned long MODIFY = 2;
   const unsigned long DELETE = 3;
   const unsigned long GET = 4;