diff --git a/src/game/CalendarHandler.cpp b/src/game/CalendarHandler.cpp
index d71d6fef7..8ef85ac21 100644
--- a/src/game/CalendarHandler.cpp
+++ b/src/game/CalendarHandler.cpp
@@ -557,7 +557,7 @@ void WorldSession::HandleCalendarEventRsvp(WorldPacket& recv_data)
             invite->Status = CalendarInviteStatus(status);
             invite->LastUpdateTime = time(NULL);
 
-            CharacterDatabase.PExecute("UPDATE calendar_invites SET status=%u, lastUpdateTime=%u WHERE inviteId = "UI64FMTD, status, uint32(invite->LastUpdateTime), invite->InviteId);
+            CharacterDatabase.PExecute("UPDATE calendar_invites SET status=%u, lastUpdateTime=%u WHERE inviteId = " UI64FMTD, status, uint32(invite->LastUpdateTime), invite->InviteId);
             sCalendarMgr.SendCalendarEventStatus(invite);
             sCalendarMgr.SendCalendarClearPendingAction(_player);
         }