diff --git a/web/src/buddy_data.ts b/web/src/buddy_data.ts
index ec88c95c80..fdb88d8ad4 100644
--- a/web/src/buddy_data.ts
+++ b/web/src/buddy_data.ts
@@ -232,16 +232,15 @@ export function info_for(user_id: number): BuddyUserInfo {
     };
 }
 
-export function get_title_data(
-    user_ids_string: string,
-    is_group: boolean,
-): {
+export type TitleData = {
     first_line: string;
     second_line: string | undefined;
     third_line: string;
     show_you?: boolean;
     is_deactivated?: boolean;
-} {
+};
+
+export function get_title_data(user_ids_string: string, is_group: boolean): TitleData {
     if (is_group) {
         // For groups, just return a string with recipient names.
         return {
diff --git a/web/src/recent_view_ui.ts b/web/src/recent_view_ui.ts
index 97722d9c18..a6a9765299 100644
--- a/web/src/recent_view_ui.ts
+++ b/web/src/recent_view_ui.ts
@@ -496,11 +496,7 @@ function message_to_conversation_unread_count(msg: Message): number {
     return unread.num_unread_for_topic(msg.stream_id, msg.topic);
 }
 
-export function get_pm_tooltip_data(user_ids_string: string): {
-    first_line: string;
-    second_line: string;
-    third_line?: string;
-} {
+export function get_pm_tooltip_data(user_ids_string: string): buddy_data.TitleData {
     const user_id = Number.parseInt(user_ids_string, 10);
     const person = people.get_by_user_id(user_id);
 
@@ -516,6 +512,7 @@ export function get_pm_tooltip_data(user_ids_string: string): {
             return {
                 first_line: person.full_name,
                 second_line: bot_owner_name,
+                third_line: "",
             };
         }