diff --git a/src/composables/auth.ts b/src/composables/auth.ts
index 2ca107afd..3e05bede1 100644
--- a/src/composables/auth.ts
+++ b/src/composables/auth.ts
@@ -101,7 +101,7 @@ export const useAuth = createCustomScopedComposable(() => {
   );
 
   /** Part of the `encryptionKey` that is used to encrypt/decrypt protected data */
-  const encryptionSalt = useStorageRef<Uint8Array | null>(
+  const encryptionSalt = useStorageRef<Uint8Array | null, string>(
     null,
     STORAGE_KEYS.encryptionSalt,
     {
diff --git a/src/composables/balances.ts b/src/composables/balances.ts
index 0d0b17a4a..4d02c57bf 100644
--- a/src/composables/balances.ts
+++ b/src/composables/balances.ts
@@ -16,6 +16,7 @@ import { useStorageRef } from './storageRef';
 import { useNetworks } from './networks';
 
 type Balances = Record<AccountAddress, Balance>;
+type BalancesSerialized = Record<AccountAddress, string>;
 
 let composableInitialized = false;
 
@@ -24,7 +25,7 @@ const POLLING_INTERVAL = 5000;
 
 const initPollingWatcher = createPollingBasedOnMountedComponents(POLLING_INTERVAL);
 
-const balances = useStorageRef<Balances>({}, STORAGE_KEYS.balances, {
+const balances = useStorageRef<Balances, BalancesSerialized>({}, STORAGE_KEYS.balances, {
   serializer: {
     read: (val) => mapValues(val, (balance: BalanceRaw) => new BigNumber(balance)),
     write: (val) => mapValues(val, (balance) => balance.toFixed()),
diff --git a/src/composables/invites.ts b/src/composables/invites.ts
index 181314950..009b930a7 100644
--- a/src/composables/invites.ts
+++ b/src/composables/invites.ts
@@ -2,7 +2,7 @@ import {
   AE_AMOUNT_FORMATS,
   Encoded,
 } from '@aeternity/aepp-sdk';
-import type { AccountAddress, IInvite } from '@/types';
+import type { AccountAddress, IInvite, IInviteSerialized } from '@/types';
 import { STORAGE_KEYS } from '@/constants';
 import { tg } from '@/popup/plugins/i18n';
 import { getAccountFromSecret } from '@/protocols/aeternity/helpers';
@@ -11,13 +11,20 @@ import { useStorageRef } from './storageRef';
 import { useModals } from './modals';
 import { useAeSdk } from './aeSdk';
 
-const invites = useStorageRef<IInvite[]>(
+const invites = useStorageRef<IInvite[], IInviteSerialized[]>(
   [],
   STORAGE_KEYS.invites,
   {
     migrations: [
       migrateInvitesVuexToComposable,
     ],
+    serializer: {
+      read: (arr) => arr
+        // TODO: remove `as any` after updating `Buffer.from` type
+        .map(({ secretKey, ...item }) => ({ ...item, secretKey: Buffer.from(secretKey as any) })),
+      write: (arr) => arr
+        .map(({ secretKey, ...item }) => ({ ...item, secretKey: secretKey.toJSON() })),
+    },
   },
 );
 
@@ -27,7 +34,7 @@ export function useInvites() {
 
   function addInvite(secretKey: Buffer) {
     invites.value.unshift({
-      secretKey: secretKey.toJSON(),
+      secretKey,
       createdAt: Date.now(),
     });
   }
diff --git a/src/composables/storageRef.ts b/src/composables/storageRef.ts
index 752adcc86..b9be2d632 100644
--- a/src/composables/storageRef.ts
+++ b/src/composables/storageRef.ts
@@ -5,7 +5,7 @@ import { asyncPipe } from '@/utils';
 import { SecureMobileStorage } from '@/lib/SecureMobileStorage';
 import { IS_MOBILE_APP } from '@/constants';
 
-export interface ICreateStorageRefOptions<T> {
+export interface ICreateStorageRefOptions<T, TSerialized = unknown> {
   /**
    * Enable secure storage for the data.
    * Mobile app only.
@@ -19,10 +19,10 @@ export interface ICreateStorageRefOptions<T> {
    * Callbacks run on the data that will be saved and read from the browser storage.
    */
   serializer?: {
-    read: (val: T) => any;
-    write: (val: T) => any;
+    read: (val: TSerialized) => T;
+    write: (val: T) => TSerialized;
   };
-  migrations?: Migration<T>[];
+  migrations?: Migration<TSerialized>[];
   /**
    * Allows to ensure the state is already synced with browser storage and migrated.
    */
@@ -38,14 +38,17 @@ export interface ICreateStorageRefOptions<T> {
  * Also allows to sync the state between the app and the extension background.
  * Inspired by `useStorage`: https://vueuse.org/core/useStorage/
  */
-export function useStorageRef<T = string | object | any[]>(
+export function useStorageRef<T = string | object | any[], TSerialized = unknown>(
   initialState: T,
   storageKey: StorageKey,
-  options: ICreateStorageRefOptions<T> = {},
+  options: ICreateStorageRefOptions<T, TSerialized> = {},
 ) {
   const {
     enableSecureStorage = false,
-    serializer,
+    serializer = {
+      read: (a: unknown) => a,
+      write: (a: unknown) => a,
+    } as unknown as NonNullable<typeof options['serializer']>,
     backgroundSync = false,
     migrations,
     onRestored,
@@ -56,28 +59,28 @@ export function useStorageRef<T = string | object | any[]>(
   const state = ref(initialState) as Ref<T>; // https://github.com/vuejs/core/issues/2136/
   const storage = (enableSecureStorage && IS_MOBILE_APP) ? SecureMobileStorage : WalletStorage;
 
-  async function setLocalState(val: T | null) {
+  async function setLocalState(val: TSerialized | null) {
     if (val !== null) {
       watcherDisabled = true;
-      state.value = (serializer?.read) ? await serializer.read(val) : val;
+      state.value = await serializer.read(val);
       setTimeout(() => { watcherDisabled = false; }, 0);
     }
   }
 
   async function setStorageState(val: T | null) {
-    storage.set(storageKey, (val && serializer?.write) ? await serializer.write(val) : val);
+    storage.set(storageKey, val ? await serializer.write(val) : val);
   }
 
   // Restore state and run watchers
   (async () => {
-    let restoredValue = await storage.get<T | null>(storageKey);
+    let restoredValue = await storage.get<TSerialized | null>(storageKey);
     if (migrations?.length) {
-      restoredValue = await asyncPipe<T | null>(migrations)(restoredValue!);
+      restoredValue = await asyncPipe<TSerialized | null>(migrations)(restoredValue!);
       if (restoredValue !== null) {
-        await setStorageState(restoredValue);
+        storage.set(storageKey, restoredValue);
       }
     }
-    onRestored?.(restoredValue);
+    onRestored?.(restoredValue == null ? restoredValue as T : await serializer.read(restoredValue));
     await setLocalState(restoredValue);
 
     /**
diff --git a/src/migrations/006-invites-vuex-to-composable.ts b/src/migrations/006-invites-vuex-to-composable.ts
index e0da500f5..f21e082aa 100644
--- a/src/migrations/006-invites-vuex-to-composable.ts
+++ b/src/migrations/006-invites-vuex-to-composable.ts
@@ -1,7 +1,7 @@
-import type { IInvite, Migration } from '@/types';
+import type { IInviteSerialized, Migration } from '@/types';
 import { collectVuexState } from './migrationHelpers';
 
-const migration: Migration<IInvite[]> = async (restoredValue: IInvite[]) => {
+const migration: Migration<IInviteSerialized[]> = async (restoredValue: IInviteSerialized[]) => {
   if (!restoredValue?.length) {
     const invites = (await collectVuexState())?.invites?.invites;
     if (invites?.length) {
diff --git a/src/popup/components/InviteItem.vue b/src/popup/components/InviteItem.vue
index 53dff7b53..9ab16713c 100644
--- a/src/popup/components/InviteItem.vue
+++ b/src/popup/components/InviteItem.vue
@@ -162,7 +162,7 @@ export default defineComponent({
 
     const link = computed(() => {
       // nm_ prefix was chosen as a dummy to decode from base58Check
-      const secretKey = (encode(Buffer.from(props.secretKey), Encoding.Name)).slice(3);
+      const secretKey = (encode(props.secretKey, Encoding.Name)).slice(3);
       return new URL(
         `${router
           .resolve({ name: ROUTE_INVITE_CLAIM })
@@ -171,7 +171,7 @@ export default defineComponent({
       );
     });
 
-    const address = computed(() => getAccountFromSecret(Buffer.from(props.secretKey)).address);
+    const address = computed(() => getAccountFromSecret(props.secretKey).address);
 
     function deleteItem() {
       removeInvite(props.secretKey);
@@ -192,7 +192,7 @@ export default defineComponent({
       emit('loading', true);
       try {
         await claimInvite({
-          secretKey: Buffer.from(props.secretKey),
+          secretKey: props.secretKey,
           recipientId: getLastActiveProtocolAccount(PROTOCOLS.aeternity)?.address!,
           isMax: true,
         });
diff --git a/src/types/index.ts b/src/types/index.ts
index 05d0e7201..d99707081 100644
--- a/src/types/index.ts
+++ b/src/types/index.ts
@@ -899,10 +899,17 @@ export interface IFormSelectOption {
 export type Migration<T = any> = (restoredValue: T | any) => Promise<T>;
 
 export interface IInvite {
-  secretKey: object;
+  secretKey: Buffer;
   createdAt: number;
 }
 
+export interface IInviteSerialized extends Omit<IInvite, 'secretKey'> {
+  secretKey: {
+    type: 'Buffer';
+    data: number[];
+  };
+}
+
 export interface IHistoryItem {
   url: string;
   cleanPath?: string;