diff --git a/lib/shared/user-utils.js b/lib/shared/user-utils.js
--- a/lib/shared/user-utils.js
+++ b/lib/shared/user-utils.js
@@ -10,24 +10,26 @@
 import type { UserInfo } from '../types/user-types.js';
 import { useSelector } from '../utils/redux-utils.js';
 
-function stringForUser(user: {
-  +username?: ?string,
-  +isViewer?: ?boolean,
-  ...
-}): string {
-  if (user.isViewer) {
+function stringForUser(
+  user: ?{
+    +username?: ?string,
+    +isViewer?: ?boolean,
+    ...
+  },
+): string {
+  if (user?.isViewer) {
     return 'you';
   }
 
   return stringForUserExplicit(user);
 }
 
-function stringForUserExplicit(user: { +username: ?string, ... }): string {
-  if (user.username) {
+function stringForUserExplicit(user: ?{ +username: ?string, ... }): string {
+  if (user?.username) {
     return user.username;
-  } else {
-    return 'anonymous';
   }
+
+  return 'anonymous';
 }
 
 function useKeyserverAdmin(
diff --git a/native/bottom-sheets/user-profile-bottom-sheet.react.js b/native/bottom-sheets/user-profile-bottom-sheet.react.js
--- a/native/bottom-sheets/user-profile-bottom-sheet.react.js
+++ b/native/bottom-sheets/user-profile-bottom-sheet.react.js
@@ -2,15 +2,16 @@
 
 import * as React from 'react';
 
-import type { AccountUserInfo } from 'lib/types/user-types.js';
+import type { UserInfo } from 'lib/types/user-types';
 
 import BottomSheet from './bottom-sheet.react.js';
 import UserProfile from '../components/user-profile.react.js';
 import type { RootNavigationProp } from '../navigation/root-navigator.react.js';
 import type { NavigationRoute } from '../navigation/route-names.js';
+import { useSelector } from '../redux/redux-utils.js';
 
 export type UserProfileBottomSheetParams = {
-  +userInfo: AccountUserInfo,
+  +userID: string,
 };
 
 type Props = {
@@ -22,12 +23,16 @@
   const {
     navigation,
     route: {
-      params: { userInfo },
+      params: { userID },
     },
   } = props;
 
   const { goBackOnce } = navigation;
 
+  const userInfo: ?UserInfo = useSelector(
+    state => state.userStore.userInfos[userID],
+  );
+
   const bottomSheetRef = React.useRef();
 
   React.useEffect(() => {
diff --git a/native/components/user-profile.react.js b/native/components/user-profile.react.js
--- a/native/components/user-profile.react.js
+++ b/native/components/user-profile.react.js
@@ -14,7 +14,7 @@
 import { useStyles } from '../themes/colors.js';
 
 type Props = {
-  +userInfo: UserInfo,
+  +userInfo: ?UserInfo,
 };
 
 function UserProfile(props: Props): React.Node {
@@ -68,7 +68,7 @@
     <View style={styles.container}>
       <SWMansionIcon name="menu-vertical" size={24} style={styles.moreIcon} />
       <View style={styles.userInfoContainer}>
-        <UserAvatar size="profile" userID={userInfo.id} />
+        <UserAvatar size="profile" userID={userInfo?.id} />
         <View style={styles.usernameContainer}>
           <SingleLine style={styles.usernameText}>{usernameText}</SingleLine>
           {copyUsernameButton}