diff --git a/src/components/moderation/LabelsOnMeDialog.tsx b/src/components/moderation/LabelsOnMeDialog.tsx
index c817431117..ceee4cf9dc 100644
--- a/src/components/moderation/LabelsOnMeDialog.tsx
+++ b/src/components/moderation/LabelsOnMeDialog.tsx
@@ -1,6 +1,7 @@
-import React from 'react'
+import React, {useState} from 'react'
 import {View} from 'react-native'
 import {type ComAtprotoLabelDefs, ComAtprotoModerationDefs} from '@atproto/api'
+import {XRPCError} from '@atproto/xrpc'
 import {msg, Trans} from '@lingui/macro'
 import {useLingui} from '@lingui/react'
 import {useMutation} from '@tanstack/react-query'
@@ -19,6 +20,7 @@ import {Button, ButtonIcon, ButtonText} from '#/components/Button'
 import * as Dialog from '#/components/Dialog'
 import {InlineLinkText} from '#/components/Link'
 import {Text} from '#/components/Typography'
+import {Admonition} from '../Admonition'
 import {Divider} from '../Divider'
 import {Loader} from '../Loader'
 
@@ -228,6 +230,7 @@ function AppealForm({
   const sourceName = labeler
     ? sanitizeHandle(labeler.creator.handle, '@')
     : label.src
+  const [error, setError] = useState<string | null>(null)
 
   const {mutate, isPending} = useMutation({
     mutationFn: async () => {
@@ -252,8 +255,16 @@ function AppealForm({
       )
     },
     onError: err => {
+      if (err instanceof XRPCError && err.error === 'AlreadyAppealed') {
+        setError(
+          _(
+            msg`You've already appealed this label and it's being reviewed by our moderation team.`,
+          ),
+        )
+      } else {
+        setError(_(msg`Failed to submit appeal, please try again.`))
+      }
       logger.error('Failed to submit label appeal', {message: err})
-      Toast.show(_(msg`Failed to submit appeal, please try again.`), 'xmark')
     },
     onSuccess: () => {
       control.close()
@@ -285,6 +296,11 @@ function AppealForm({
           </Trans>
         </Text>
       </View>
+      {error && (
+        <Admonition type="error" style={[a.mt_sm]}>
+          {error}
+        </Admonition>
+      )}
       <View style={[a.my_md]}>
         <Dialog.Input
           label={_(msg`Text input field`)}