diff --git a/lib/shared/unshim-utils.js b/lib/shared/unshim-utils.js
index 4b3752893..ab45faf1f 100644
--- a/lib/shared/unshim-utils.js
+++ b/lib/shared/unshim-utils.js
@@ -1,55 +1,56 @@
 // @flow
 
 import _mapValues from 'lodash/fp/mapValues';
 
 import {
   type MessageStore,
   type RawMessageInfo,
   type MessageType,
   messageTypes,
 } from '../types/message-types';
 import { messageSpecs } from './messages/message-specs';
 
 function unshimFunc(
   messageInfo: RawMessageInfo,
   unshimTypes: Set<MessageType>,
 ): RawMessageInfo {
   if (messageInfo.type !== messageTypes.UNSUPPORTED) {
     return messageInfo;
   }
   if (!unshimTypes.has(messageInfo.unsupportedMessageInfo.type)) {
     return messageInfo;
   }
   const unwrapped = messageInfo.unsupportedMessageInfo;
   const { unshimMessageInfo } = messageSpecs[unwrapped.type];
   const unshimmed = unshimMessageInfo?.(unwrapped, messageInfo);
   return unshimmed ?? unwrapped;
 }
 
 function unshimMessageStore(
   messageStore: MessageStore,
   unshimTypes: $ReadOnlyArray<MessageType>,
 ): MessageStore {
   const set = new Set(unshimTypes);
   const messages = _mapValues((messageInfo: RawMessageInfo) =>
     unshimFunc(messageInfo, set),
   )(messageStore.messages);
   return { ...messageStore, messages };
 }
 
 const localUnshimTypes = new Set([
   messageTypes.IMAGES,
   messageTypes.UPDATE_RELATIONSHIP,
   messageTypes.CREATE_SIDEBAR,
   messageTypes.SIDEBAR_SOURCE,
   messageTypes.MULTIMEDIA,
+  messageTypes.REACTION,
 ]);
 function unshimMessageInfos(
   messageInfos: $ReadOnlyArray<RawMessageInfo>,
 ): RawMessageInfo[] {
   return messageInfos.map((messageInfo: RawMessageInfo) =>
     unshimFunc(messageInfo, localUnshimTypes),
   );
 }
 
 export { unshimMessageStore, unshimMessageInfos, unshimFunc };