diff --git a/lib/types/messages/media.js b/lib/types/messages/media.js
index 5f1957503..f7ebb9e8e 100644
--- a/lib/types/messages/media.js
+++ b/lib/types/messages/media.js
@@ -1,28 +1,39 @@
 // @flow
 
 import type { Media } from '../media-types';
 import type { RelativeUserInfo } from '../user-types';
 
 export type MediaMessageData = {
   type: 15,
   localID?: string, // for optimistic creations. included by new clients
   threadID: string,
   creatorID: string,
   time: number,
   media: $ReadOnlyArray<Media>,
 };
 
 export type RawMediaMessageInfo = {
   ...MediaMessageData,
   id?: string, // null if local copy without ID yet
 };
 
 export type MediaMessageInfo = {
   type: 15,
   id?: string, // null if local copy without ID yet
   localID?: string, // for optimistic creations
   threadID: string,
   creator: RelativeUserInfo,
   time: number, // millisecond timestamp
   media: $ReadOnlyArray<Media>,
 };
+
+export type MediaMessageServerDBContent =
+  | {
+      +type: 'photo',
+      +uploadID: string,
+    }
+  | {
+      +type: 'video',
+      +uploadID: string,
+      +thumbnailUploadID: string,
+    };