diff --git a/src/libs/PersonalDetailsUtils.ts b/src/libs/PersonalDetailsUtils.ts
index 1eced4d84cdb..da8dd86e29ee 100644
--- a/src/libs/PersonalDetailsUtils.ts
+++ b/src/libs/PersonalDetailsUtils.ts
@@ -12,6 +12,7 @@ import {isEmptyObject} from '@src/types/utils/EmptyObject';
 import {translateLocal} from './Localize';
 import {areEmailsFromSamePrivateDomain} from './LoginUtils';
 import {parsePhoneNumber} from './PhoneNumber';
+import {getDefaultAvatarURL} from './UserAvatarUtils';
 import {generateAccountID} from './UserUtils';
 
 type FirstAndLastName = {
@@ -223,6 +224,7 @@ function getPersonalDetailsOnyxDataForOptimisticUsers(
         personalDetailsNew[accountID] = {
             login,
             accountID,
+            avatar: getDefaultAvatarURL({accountID, accountEmail: login}),
             displayName: formatPhoneNumber(login),
             isOptimisticPersonalDetail: true,
         };
diff --git a/tests/unit/libs/PersonalDetailsUtilsTest.ts b/tests/unit/libs/PersonalDetailsUtilsTest.ts
index 9a9675e8e59f..9b27566941e0 100644
--- a/tests/unit/libs/PersonalDetailsUtilsTest.ts
+++ b/tests/unit/libs/PersonalDetailsUtilsTest.ts
@@ -112,6 +112,7 @@ describe('PersonalDetailsUtils', () => {
                             // eslint-disable-next-line @typescript-eslint/naming-convention
                             '1': {
                                 accountID: 1,
+                                avatar: 'https://d2k5nsl2zxldvw.cloudfront.net/images/avatars/default-avatar_15.png',
                                 displayName: '3322076524',
                                 isOptimisticPersonalDetail: true,
                                 login: '3322076524',
@@ -119,6 +120,7 @@ describe('PersonalDetailsUtils', () => {
                             // eslint-disable-next-line @typescript-eslint/naming-convention
                             '2': {
                                 accountID: 2,
+                                avatar: 'https://d2k5nsl2zxldvw.cloudfront.net/images/avatars/default-avatar_18.png',
                                 displayName: 'test2@test.com',
                                 isOptimisticPersonalDetail: true,
                                 login: 'test2@test.com',
@@ -126,6 +128,7 @@ describe('PersonalDetailsUtils', () => {
                             // eslint-disable-next-line @typescript-eslint/naming-convention
                             '3': {
                                 accountID: 3,
+                                avatar: 'https://d2k5nsl2zxldvw.cloudfront.net/images/avatars/default-avatar_6.png',
                                 displayName: '(418) 543-8090',
                                 isOptimisticPersonalDetail: true,
                                 login: '+14185438090',