diff --git a/lib/shared/messages/reaction-message-spec.js b/lib/shared/messages/reaction-message-spec.js
index ce176fbf1..4bd84d817 100644
--- a/lib/shared/messages/reaction-message-spec.js
+++ b/lib/shared/messages/reaction-message-spec.js
@@ -1,97 +1,122 @@
 // @flow
 
 import invariant from 'invariant';
 
+import type { PlatformDetails } from '../../types/device-types';
 import {
   assertMessageType,
   messageTypes,
   type ClientDBMessageInfo,
   type ReactionMessageData,
   type RawReactionMessageInfo,
   type ReactionMessageInfo,
 } from '../../types/message-types';
+import type { RawUnsupportedMessageInfo } from '../../types/messages/unsupported';
 import type { RelativeUserInfo } from '../../types/user-types';
 import { messagePreviewText, removeCreatorAsViewer } from '../message-utils';
+import { hasMinCodeVersion } from '../version-utils';
 import type { MessageSpec, MessageTitleParam } from './message-spec';
 
 export const reactionMessageSpec: MessageSpec<
   ReactionMessageData,
   RawReactionMessageInfo,
   ReactionMessageInfo,
 > = Object.freeze({
   messageContentForServerDB(
     data: ReactionMessageData | RawReactionMessageInfo,
   ): string {
     return JSON.stringify({
       reaction: data.reaction,
       action: data.action,
     });
   },
 
   messageContentForClientDB(data: RawReactionMessageInfo): string {
     return JSON.stringify({
       targetMessageID: data.targetMessageID,
       reaction: data.reaction,
       action: data.action,
     });
   },
 
   messageTitle({
     messageInfo,
     threadInfo,
     viewerContext,
   }: MessageTitleParam<ReactionMessageInfo>) {
     let validMessageInfo: ReactionMessageInfo = (messageInfo: ReactionMessageInfo);
     if (viewerContext === 'global_viewer') {
       validMessageInfo = removeCreatorAsViewer(validMessageInfo);
     }
     return messagePreviewText(validMessageInfo, threadInfo);
   },
 
   rawMessageInfoFromClientDB(
     clientDBMessageInfo: ClientDBMessageInfo,
   ): RawReactionMessageInfo {
     const messageType = assertMessageType(parseInt(clientDBMessageInfo.type));
     invariant(
       messageType === messageTypes.REACTION,
       'message must be of type REACTION',
     );
     invariant(
       clientDBMessageInfo.content !== undefined &&
         clientDBMessageInfo.content !== null,
       'content must be defined',
     );
     const content = JSON.parse(clientDBMessageInfo.content);
 
     const rawReactionMessageInfo: RawReactionMessageInfo = {
       type: messageTypes.REACTION,
       id: clientDBMessageInfo.id,
       threadID: clientDBMessageInfo.thread,
       time: parseInt(clientDBMessageInfo.time),
       creatorID: clientDBMessageInfo.user,
       targetMessageID: content.targetMessageID,
       reaction: content.reaction,
       action: content.action,
     };
 
     return rawReactionMessageInfo;
   },
 
   createMessageInfo(
     rawMessageInfo: RawReactionMessageInfo,
     creator: RelativeUserInfo,
   ): ReactionMessageInfo {
     return {
       type: messageTypes.REACTION,
       id: rawMessageInfo.id,
       threadID: rawMessageInfo.threadID,
       creator,
       time: rawMessageInfo.time,
       targetMessageID: rawMessageInfo.targetMessageID,
       reaction: rawMessageInfo.reaction,
       action: rawMessageInfo.action,
     };
   },
 
+  shimUnsupportedMessageInfo(
+    rawMessageInfo: RawReactionMessageInfo,
+    platformDetails: ?PlatformDetails,
+  ): RawReactionMessageInfo | RawUnsupportedMessageInfo {
+    // TODO: change minCodeVersion to correct number when ready
+    if (hasMinCodeVersion(platformDetails, 999)) {
+      return rawMessageInfo;
+    }
+    const { id } = rawMessageInfo;
+    invariant(id !== null && id !== undefined, 'id should be set on server');
+
+    return {
+      type: messageTypes.UNSUPPORTED,
+      id,
+      threadID: rawMessageInfo.threadID,
+      creatorID: rawMessageInfo.creatorID,
+      time: rawMessageInfo.time,
+      robotext: 'liked a message',
+      unsupportedMessageInfo: rawMessageInfo,
+    };
+  },
+
   generatesNotifs: false,
 });