diff --git a/packages/core/src/types.ts b/packages/core/src/types.ts
index 34dfa758..7a476d1b 100644
--- a/packages/core/src/types.ts
+++ b/packages/core/src/types.ts
@@ -9,10 +9,12 @@ export type FalsyGuard<
   TFalsyValues = Falsy,
 > = TType extends TFalsyValues ? TReturnType | TFallback : TReturnType;
 
+export type MaybePromise<T> = T | Promise<T>;
+
+export type MaybeAsync<T> = T | Promise<T> | Observable<T>;
+
+export type Gettable<T> = MaybePromise<T> | (() => MaybePromise<T>);
+
 export type FlatHead<TArray extends unknown[]> = TArray extends [infer Head]
   ? Head
   : TArray;
-
-export type Gettable<T> = T | PromiseLike<T> | (() => T | PromiseLike<T>);
-
-export type MaybeAsync<T> = T | Promise<T> | Observable<T>;
diff --git a/packages/core/src/wallets/deep-link-wallet.ts b/packages/core/src/wallets/deep-link-wallet.ts
index 23184bfe..d6fccccb 100644
--- a/packages/core/src/wallets/deep-link-wallet.ts
+++ b/packages/core/src/wallets/deep-link-wallet.ts
@@ -1,3 +1,4 @@
+import type { MaybePromise } from "../types.js";
 import { Wallet, type WalletOptions } from "./wallet.js";
 
 type ConnectionHandshake = {
@@ -9,7 +10,5 @@ export abstract class DeepLinkWallet<
   TOptions extends WalletOptions = WalletOptions,
   TStorageKey extends string = string,
 > extends Wallet<TOptions, TStorageKey> {
-  abstract initiateConnectionHandshake():
-    | ConnectionHandshake
-    | Promise<ConnectionHandshake>;
+  abstract initiateConnectionHandshake(): MaybePromise<ConnectionHandshake>;
 }
diff --git a/packages/core/src/wallets/local-wallet.ts b/packages/core/src/wallets/local-wallet.ts
index aaa76452..c0cf052f 100644
--- a/packages/core/src/wallets/local-wallet.ts
+++ b/packages/core/src/wallets/local-wallet.ts
@@ -1,3 +1,4 @@
+import type { MaybePromise } from "../types.js";
 import type { PolkadotSignerAccount } from "./account.js";
 import { Wallet, type WalletOptions } from "./wallet.js";
 
@@ -13,12 +14,12 @@ export abstract class LocalWallet<
    * @experimental
    */
   abstract accountStore: {
-    add(account: TAccount): void | Promise<void>;
-    clear(): void | Promise<void>;
-    delete(account: { id: TAccount["id"] }): void | Promise<void>;
-    delete(accountId: TAccount["id"]): void | Promise<void>;
-    has(account: { id: TAccount["id"] }): boolean | Promise<boolean>;
-    has(accountId: TAccount["id"]): boolean | Promise<boolean>;
+    add(account: TAccount): MaybePromise<void>;
+    clear(): MaybePromise<void>;
+    delete(account: { id: TAccount["id"] }): MaybePromise<void>;
+    delete(accountId: TAccount["id"]): MaybePromise<void>;
+    has(account: { id: TAccount["id"] }): MaybePromise<boolean>;
+    has(accountId: TAccount["id"]): MaybePromise<boolean>;
     values(): Iterable<TAccount>;
   };
 }
diff --git a/packages/core/src/wallets/provider.ts b/packages/core/src/wallets/provider.ts
index d39d7d30..6bc312e1 100644
--- a/packages/core/src/wallets/provider.ts
+++ b/packages/core/src/wallets/provider.ts
@@ -1,5 +1,6 @@
+import type { MaybePromise } from "../types.js";
 import type { Wallet } from "./wallet.js";
 
 export abstract class WalletProvider {
-  abstract getWallets(): Wallet[] | Promise<Wallet[]>;
+  abstract getWallets(): MaybePromise<Wallet[]>;
 }
diff --git a/packages/core/src/wallets/wallet.ts b/packages/core/src/wallets/wallet.ts
index f5a93f94..1eedc450 100644
--- a/packages/core/src/wallets/wallet.ts
+++ b/packages/core/src/wallets/wallet.ts
@@ -1,4 +1,5 @@
 import { type Storage, defaultStorage } from "../storage.js";
+import type { MaybePromise } from "../types.js";
 import type { PolkadotSignerAccount } from "./account.js";
 import { firstValueFrom, type Observable } from "rxjs";
 
@@ -24,17 +25,17 @@ export abstract class Wallet<
     this.#storage = (options?.storage ?? defaultStorage).join("wallet");
   }
 
-  abstract initialize(): void | Promise<void>;
+  abstract initialize(): MaybePromise<void>;
 
   abstract readonly connected$: Observable<boolean>;
 
-  abstract connect(): void | Promise<void>;
+  abstract connect(): MaybePromise<void>;
 
-  abstract disconnect(): void | Promise<void>;
+  abstract disconnect(): MaybePromise<void>;
 
   abstract readonly accounts$: Observable<PolkadotSignerAccount[]>;
 
-  getAccounts(): PolkadotSignerAccount[] | Promise<PolkadotSignerAccount[]> {
+  getAccounts(): MaybePromise<PolkadotSignerAccount[]> {
     return firstValueFrom(this.accounts$, { defaultValue: [] });
   }
 }