diff --git a/src/components/TagMenu/index.tsx b/src/components/TagMenu/index.tsx
index c9ced9a54c..beb34a0dd4 100644
--- a/src/components/TagMenu/index.tsx
+++ b/src/components/TagMenu/index.tsx
@@ -17,7 +17,7 @@ import {makeSearchLink} from '#/lib/routes/links'
 import {NavigationProp} from '#/lib/routes/types'
 import {
   usePreferencesQuery,
-  useUpsertMutedWordsMutation,
+  useAddMutedWordMutation,
   useRemoveMutedWordMutation,
 } from '#/state/queries/preferences'
 import {Loader} from '#/components/Loader'
@@ -47,10 +47,10 @@ export function TagMenu({
   const {isLoading: isPreferencesLoading, data: preferences} =
     usePreferencesQuery()
   const {
-    mutateAsync: upsertMutedWord,
-    variables: optimisticUpsert,
-    reset: resetUpsert,
-  } = useUpsertMutedWordsMutation()
+    mutateAsync: addMutedWord,
+    variables: optimisticAdd,
+    reset: resetAdd,
+  } = useAddMutedWordMutation()
   const {
     mutateAsync: removeMutedWord,
     variables: optimisticRemove,
@@ -62,9 +62,8 @@ export function TagMenu({
     (preferences?.mutedWords?.find(
       m => m.value === tag && m.targets.includes('tag'),
     ) ??
-      optimisticUpsert?.find(
-        m => m.value === tag && m.targets.includes('tag'),
-      )) &&
+      (optimisticAdd?.value === tag &&
+        optimisticAdd.targets.includes('tag'))) &&
       !(optimisticRemove?.value === tag),
   )
 
@@ -211,14 +210,14 @@ export function TagMenu({
                       onPress={() => {
                         control.close(() => {
                           if (isMuted) {
-                            resetUpsert()
+                            resetAdd()
                             removeMutedWord({
                               value: tag,
                               targets: ['tag'],
                             })
                           } else {
                             resetRemove()
-                            upsertMutedWord([{value: tag, targets: ['tag']}])
+                            addMutedWord({value: tag, targets: ['tag']})
                           }
                         })
                       }}>
diff --git a/src/components/TagMenu/index.web.tsx b/src/components/TagMenu/index.web.tsx
index a0dc2bce63..59f0cf34c5 100644
--- a/src/components/TagMenu/index.web.tsx
+++ b/src/components/TagMenu/index.web.tsx
@@ -9,7 +9,7 @@ import {NativeDropdown} from '#/view/com/util/forms/NativeDropdown'
 import {NavigationProp} from '#/lib/routes/types'
 import {
   usePreferencesQuery,
-  useUpsertMutedWordsMutation,
+  useAddMutedWordMutation,
   useRemoveMutedWordMutation,
 } from '#/state/queries/preferences'
 import {enforceLen} from '#/lib/strings/helpers'
@@ -45,17 +45,16 @@ export function TagMenu({
   const {_} = useLingui()
   const navigation = useNavigation<NavigationProp>()
   const {data: preferences} = usePreferencesQuery()
-  const {mutateAsync: upsertMutedWord, variables: optimisticUpsert} =
-    useUpsertMutedWordsMutation()
+  const {mutateAsync: addMutedWord, variables: optimisticAdd} =
+    useAddMutedWordMutation()
   const {mutateAsync: removeMutedWord, variables: optimisticRemove} =
     useRemoveMutedWordMutation()
   const isMuted = Boolean(
     (preferences?.mutedWords?.find(
       m => m.value === tag && m.targets.includes('tag'),
     ) ??
-      optimisticUpsert?.find(
-        m => m.value === tag && m.targets.includes('tag'),
-      )) &&
+      (optimisticAdd?.value === tag &&
+        optimisticAdd.targets.includes('tag'))) &&
       !(optimisticRemove?.value === tag),
   )
   const truncatedTag = '#' + enforceLen(tag, 15, true, 'middle')
@@ -107,7 +106,7 @@ export function TagMenu({
           if (isMuted) {
             removeMutedWord({value: tag, targets: ['tag']})
           } else {
-            upsertMutedWord([{value: tag, targets: ['tag']}])
+            addMutedWord({value: tag, targets: ['tag']})
           }
         },
         testID: 'tagMenuMute',
@@ -128,7 +127,7 @@ export function TagMenu({
     preferences,
     tag,
     truncatedTag,
-    upsertMutedWord,
+    addMutedWord,
     removeMutedWord,
   ])
 
diff --git a/src/components/dialogs/MutedWords.tsx b/src/components/dialogs/MutedWords.tsx
index 658ba2aae0..5f9236aa1e 100644
--- a/src/components/dialogs/MutedWords.tsx
+++ b/src/components/dialogs/MutedWords.tsx
@@ -6,7 +6,7 @@ import {AppBskyActorDefs, sanitizeMutedWordValue} from '@atproto/api'
 
 import {
   usePreferencesQuery,
-  useUpsertMutedWordsMutation,
+  useAddMutedWordMutation,
   useRemoveMutedWordMutation,
 } from '#/state/queries/preferences'
 import {isNative} from '#/platform/detection'
@@ -52,7 +52,7 @@ function MutedWordsInner({}: {control: Dialog.DialogOuterProps['control']}) {
     data: preferences,
     error: preferencesError,
   } = usePreferencesQuery()
-  const {isPending, mutateAsync: addMutedWord} = useUpsertMutedWordsMutation()
+  const {isPending, mutateAsync: addMutedWord} = useAddMutedWordMutation()
   const [field, setField] = React.useState('')
   const [options, setOptions] = React.useState(['content'])
   const [error, setError] = React.useState('')
@@ -71,7 +71,7 @@ function MutedWordsInner({}: {control: Dialog.DialogOuterProps['control']}) {
 
     try {
       // send raw value and rely on SDK as sanitization source of truth
-      await addMutedWord([{value: field, targets}])
+      await addMutedWord({value: field, targets})
       setField('')
     } catch (e: any) {
       logger.error(`Failed to save muted word`, {message: e.message})
diff --git a/src/state/queries/preferences/index.ts b/src/state/queries/preferences/index.ts
index 37ef10ae0c..2e18da8d2f 100644
--- a/src/state/queries/preferences/index.ts
+++ b/src/state/queries/preferences/index.ts
@@ -284,12 +284,12 @@ export function useUnpinFeedMutation() {
   })
 }
 
-export function useUpsertMutedWordsMutation() {
+export function useAddMutedWordMutation() {
   const queryClient = useQueryClient()
 
   return useMutation({
-    mutationFn: async (mutedWords: AppBskyActorDefs.MutedWord[]) => {
-      await getAgent().upsertMutedWords(mutedWords)
+    mutationFn: async (mutedWord: AppBskyActorDefs.MutedWord) => {
+      await getAgent().addMutedWord(mutedWord)
       // triggers a refetch
       await queryClient.invalidateQueries({
         queryKey: preferencesQueryKey,