diff --git a/src/state/queries/usePostThread/index.ts b/src/state/queries/usePostThread/index.ts
index bdaa42895f..b4e217f4bd 100644
--- a/src/state/queries/usePostThread/index.ts
+++ b/src/state/queries/usePostThread/index.ts
@@ -1,4 +1,5 @@
 import {useCallback, useMemo, useState} from 'react'
+import {type AtUriString} from '@atproto/syntax'
 import {useQuery, useQueryClient} from '@tanstack/react-query'
 
 import {useModerationOpts} from '#/state/preferences/moderation-opts'
@@ -73,7 +74,7 @@ export function usePostThread({anchor}: {anchor?: string}) {
     queryKey: postThreadQueryKey,
     async queryFn(ctx) {
       const data = await client.call(app.bsky.unspecced.getPostThreadV2, {
-        anchor: anchor! as app.bsky.unspecced.getPostThreadV2.$Params['anchor'],
+        anchor: anchor! as AtUriString,
         branchingFactor: view === 'linear' ? LINEAR_VIEW_BF : TREE_VIEW_BF,
         below,
         sort: sort,
@@ -169,8 +170,7 @@ export function usePostThread({anchor}: {anchor?: string}) {
     queryKey: postThreadOtherQueryKey,
     async queryFn() {
       return await client.call(app.bsky.unspecced.getPostThreadOtherV2, {
-        anchor:
-          anchor! as app.bsky.unspecced.getPostThreadOtherV2.$Params['anchor'],
+        anchor: anchor! as AtUriString,
       })
     },
   })
diff --git a/src/view/com/composer/Composer.tsx b/src/view/com/composer/Composer.tsx
index 641f651788..6c7c2280c2 100644
--- a/src/view/com/composer/Composer.tsx
+++ b/src/view/com/composer/Composer.tsx
@@ -52,6 +52,7 @@ import {
   type RichText,
 } from '@atproto/api'
 import {type Client} from '@atproto/lex'
+import {type AtUriString} from '@atproto/syntax'
 import {plural} from '@lingui/core/macro'
 import {Trans, useLingui} from '@lingui/react/macro'
 import {useNavigation} from '@react-navigation/native'
@@ -1109,8 +1110,7 @@ export const ComposePost = ({
               const res = await client.call(
                 app.bsky.unspecced.getPostThreadV2,
                 {
-                  anchor:
-                    postUri! as app.bsky.unspecced.getPostThreadV2.$Params['anchor'],
+                  anchor: postUri! as AtUriString,
                   above: false,
                   below: filteredThread.posts.length - 1,
                   branchingFactor: 1,
@@ -2502,7 +2502,7 @@ async function whenAppViewReady(
     fn,
     () =>
       client.call(app.bsky.unspecced.getPostThreadV2, {
-        anchor: uri as app.bsky.unspecced.getPostThreadV2.$Params['anchor'],
+        anchor: uri as AtUriString,
         above: false,
         below: 0,
         branchingFactor: 0,