diff --git a/ts/jobs/helpers/sendReaction.ts b/ts/jobs/helpers/sendReaction.ts
index 942c023bd7b0..0d5adb6a80cf 100644
--- a/ts/jobs/helpers/sendReaction.ts
+++ b/ts/jobs/helpers/sendReaction.ts
@@ -15,6 +15,7 @@ import type { ConversationModel } from '../../models/conversations';
 import * as reactionUtil from '../../reactions/util';
 import { isSent, SendStatus } from '../../messages/MessageSendState';
 import { getMessageById } from '../../messages/getMessageById';
+import { isIncoming } from '../../messages/helpers';
 import {
   isMe,
   isDirectConversation,
@@ -26,7 +27,8 @@ import { handleMessageSend } from '../../util/handleMessageSend';
 import { ourProfileKeyService } from '../../services/ourProfileKey';
 import { canReact, isStory } from '../../state/selectors/message';
 import { findAndFormatContact } from '../../util/findAndFormatContact';
-import type { ServiceIdString } from '../../types/ServiceId';
+import type { AciString, ServiceIdString } from '../../types/ServiceId';
+import { isAciString } from '../../types/ServiceId';
 import { handleMultipleSendErrors } from './handleMultipleSendErrors';
 import { incrementMessageCounter } from '../../util/incrementMessageCounter';
 
@@ -136,8 +138,18 @@ export async function sendReaction(
       ? await ourProfileKeyService.get()
       : undefined;
 
-    const { emoji, targetAuthorAci, ...restOfPendingReaction } =
-      pendingReaction;
+    const { emoji, ...restOfPendingReaction } = pendingReaction;
+
+    let targetAuthorAci: AciString;
+    if (isIncoming(message.attributes)) {
+      strictAssert(
+        isAciString(message.attributes.sourceServiceId),
+        'incoming message does not have sender ACI'
+      );
+      ({ sourceServiceId: targetAuthorAci } = message.attributes);
+    } else {
+      targetAuthorAci = ourAci;
+    }
 
     const reactionForSend = {
       ...restOfPendingReaction,
diff --git a/ts/model-types.d.ts b/ts/model-types.d.ts
index c0867f34af0f..fc3c34117d9c 100644
--- a/ts/model-types.d.ts
+++ b/ts/model-types.d.ts
@@ -111,7 +111,6 @@ export type GroupV1Update = {
 export type MessageReactionType = {
   emoji: undefined | string;
   fromId: string;
-  targetAuthorAci: AciString;
   targetTimestamp: number;
   timestamp: number;
   isSentByConversationId?: Record<string, boolean>;
diff --git a/ts/models/messages.ts b/ts/models/messages.ts
index 4cbf148ab156..021c2ecc653d 100644
--- a/ts/models/messages.ts
+++ b/ts/models/messages.ts
@@ -2967,7 +2967,6 @@ export class MessageModel extends window.Backbone.Model<MessageAttributesType> {
     const newReaction: MessageReactionType = {
       emoji: reaction.remove ? undefined : reaction.emoji,
       fromId: reaction.fromId,
-      targetAuthorAci: reaction.targetAuthorAci,
       targetTimestamp: reaction.targetTimestamp,
       timestamp: reaction.timestamp,
       isSentByConversationId: isFromThisDevice
diff --git a/ts/sql/migrations/88-service-ids.ts b/ts/sql/migrations/88-service-ids.ts
index 5cba44197400..6bf60da40297 100644
--- a/ts/sql/migrations/88-service-ids.ts
+++ b/ts/sql/migrations/88-service-ids.ts
@@ -799,11 +799,9 @@ function migrateMessages(db: Database, logger: LoggerType): void {
                 ),
               }
             : undefined,
-          reactions: reactions?.map(r =>
-            migrateReaction(r, 'reactions', logger)
-          ),
+          reactions: reactions?.map(r => migrateReaction(r)),
           storyReaction: storyReaction
-            ? migrateReaction(storyReaction, 'storyReaction', logger)
+            ? migrateReaction(storyReaction)
             : undefined,
           storyReplyContext: storyReplyContext
             ? {
@@ -1231,22 +1229,13 @@ function migrateBodyRanges(
 }
 
 type LegacyReaction = JSONWithUnknownFields<{
-  authorUuid?: string;
+  targetAuthorUuid?: string;
 }>;
 
-type UpdatedReaction = JSONWithUnknownFields<{
-  authorAci: AciString | undefined;
-}>;
+type UpdatedReaction = JSONWithUnknownFields<Record<string, unknown>>;
 
-function migrateReaction(
-  { authorUuid, ...legacy }: LegacyReaction,
-  context: string,
-  logger: LoggerType
-): UpdatedReaction {
-  return {
-    ...legacy,
-    authorAci: normalizeAci(authorUuid, context, logger),
-  };
+function migrateReaction(legacy: LegacyReaction): UpdatedReaction {
+  return omit(legacy, 'targetAuthorUuid');
 }
 
 type LegacyGroupChange = JSONWithUnknownFields<{
diff --git a/ts/test-both/reactions/util_test.ts b/ts/test-both/reactions/util_test.ts
index e3d04beb65bc..1ef470a1df04 100644
--- a/ts/test-both/reactions/util_test.ts
+++ b/ts/test-both/reactions/util_test.ts
@@ -6,7 +6,6 @@ import { v4 as uuid } from 'uuid';
 import { omit } from 'lodash';
 import type { MessageReactionType } from '../../model-types.d';
 import { isEmpty } from '../../util/iterables';
-import { generateAci } from '../../types/ServiceId';
 
 import {
   addOutgoingReaction,
@@ -25,7 +24,6 @@ describe('reaction utilities', () => {
   ): MessageReactionType => ({
     emoji,
     fromId: OUR_CONVO_ID,
-    targetAuthorAci: generateAci(),
     targetTimestamp: Date.now(),
     timestamp: Date.now(),
     ...(isPending ? { isSentByConversationId: { [uuid()]: false } } : {}),
diff --git a/ts/test-electron/state/ducks/conversations_test.ts b/ts/test-electron/state/ducks/conversations_test.ts
index f2b615f5b4c3..c358832165db 100644
--- a/ts/test-electron/state/ducks/conversations_test.ts
+++ b/ts/test-electron/state/ducks/conversations_test.ts
@@ -1607,7 +1607,6 @@ describe('both/state/ducks/conversations', () => {
               fromId: 'some-other-id',
               timestamp: 2222,
               targetTimestamp: 1111,
-              targetAuthorAci: generateAci(),
             },
           ],
         };
@@ -1638,7 +1637,6 @@ describe('both/state/ducks/conversations', () => {
                   fromId: 'some-other-id',
                   timestamp: 2222,
                   targetTimestamp: 1111,
-                  targetAuthorAci: generateAci(),
                 },
               ],
             },
diff --git a/ts/test-node/sql/migration_88_test.ts b/ts/test-node/sql/migration_88_test.ts
index b0e0a07db64c..df6d6ba48d7d 100644
--- a/ts/test-node/sql/migration_88_test.ts
+++ b/ts/test-node/sql/migration_88_test.ts
@@ -247,8 +247,8 @@ describe('SQL/updateToSchemaVersion88', () => {
           expirationTimerUpdate: {
             sourceUuid: THEIR_UUID,
           },
-          reactions: [{ authorUuid: THEIR_UUID }],
-          storyReaction: { authorUuid: THEIR_UUID },
+          reactions: [{ targetAuthorUuid: THEIR_UUID }],
+          storyReaction: { targetAuthorUuid: THEIR_UUID },
           storyReplyContext: {
             authorUuid: THEIR_UUID,
           },
@@ -290,8 +290,8 @@ describe('SQL/updateToSchemaVersion88', () => {
           expirationTimerUpdate: {
             sourceServiceId: THEIR_UUID,
           },
-          reactions: [{ authorAci: THEIR_UUID }],
-          storyReaction: { authorAci: THEIR_UUID },
+          reactions: [{}],
+          storyReaction: {},
           storyReplyContext: {
             authorAci: THEIR_UUID,
           },