diff --git a/lib/shared/sidebar-utils.js b/lib/shared/sidebar-utils.js
--- a/lib/shared/sidebar-utils.js
+++ b/lib/shared/sidebar-utils.js
@@ -20,7 +20,11 @@
 } from '../types/message-types.js';
 import type { ThreadInfo } from '../types/minimally-encoded-thread-permissions-types.js';
 import { threadPermissions } from '../types/thread-permission-types.js';
-import { threadTypes, threadTypeIsThick } from '../types/thread-types-enum.js';
+import {
+  threadTypes,
+  threadTypeIsThick,
+  threadTypeIsPersonal,
+} from '../types/thread-types-enum.js';
 import type { LoggedInUserInfo } from '../types/user-types.js';
 import type { GetENSNames } from '../utils/ens-helpers.js';
 import {
@@ -76,11 +80,7 @@
   }
 
   const singleOtherUser = getSingleOtherUser(parentThreadInfo, viewerID);
-  if (
-    (parentThreadType === threadTypes.GENESIS_PERSONAL ||
-      parentThreadType === threadTypes.PERSONAL) &&
-    singleOtherUser
-  ) {
+  if (threadTypeIsPersonal(parentThreadType) && singleOtherUser) {
     const singleOtherUsername = parentThreadInfo.members.find(
       member => member.id === singleOtherUser,
     )?.username;
diff --git a/native/chat/message-list.react.js b/native/chat/message-list.react.js
--- a/native/chat/message-list.react.js
+++ b/native/chat/message-list.react.js
@@ -9,7 +9,7 @@
 import { messageKey, useFetchMessages } from 'lib/shared/message-utils.js';
 import { useWatchThread } from 'lib/shared/watch-thread-utils.js';
 import type { ThreadInfo } from 'lib/types/minimally-encoded-thread-permissions-types.js';
-import { threadTypes } from 'lib/types/thread-types-enum.js';
+import { threadTypes, threadTypeIsPersonal } from 'lib/types/thread-types-enum.js';
 
 import ChatList from './chat-list.react.js';
 import type { ChatNavigationProp } from './chat.react.js';
@@ -197,10 +197,7 @@
     const { messageListData, startReached } = this.props;
     const footer = startReached ? this.ListFooterComponent : undefined;
     let relationshipPrompt = null;
-    if (
-      this.props.threadInfo.type === threadTypes.GENESIS_PERSONAL ||
-      this.props.threadInfo.type === threadTypes.PERSONAL
-    ) {
+    if (threadTypeIsPersonal(this.props.threadInfo.type)) {
       relationshipPrompt = (
         <RelationshipPrompt
           pendingPersonalThreadUserInfo={
diff --git a/web/chat/chat-message-list.react.js b/web/chat/chat-message-list.react.js
--- a/web/chat/chat-message-list.react.js
+++ b/web/chat/chat-message-list.react.js
@@ -17,7 +17,7 @@
   threadOtherMembers,
 } from 'lib/shared/thread-utils.js';
 import type { ThreadInfo } from 'lib/types/minimally-encoded-thread-permissions-types.js';
-import { threadTypes } from 'lib/types/thread-types-enum.js';
+import { threadTypes, threadTypeIsPersonal } from 'lib/types/thread-types-enum.js';
 
 import { defaultMaxTextAreaHeight, editBoxHeight } from './chat-constants.js';
 import css from './chat-message-list.css';
@@ -294,10 +294,7 @@
     const messages = messageListData.map(this.renderItem);
 
     let relationshipPrompt = null;
-    if (
-      threadInfo.type === threadTypes.GENESIS_PERSONAL ||
-      threadInfo.type === threadTypes.PERSONAL
-    ) {
+    if (threadTypeIsPersonal(threadInfo.type)) {
       const otherMembers = threadOtherMembers(
         threadInfo.members,
         this.props.viewerID,