diff --git a/packages/client/src/client.ts b/packages/client/src/client.ts
index 15bf77d5..7fac26c4 100644
--- a/packages/client/src/client.ts
+++ b/packages/client/src/client.ts
@@ -224,6 +224,7 @@ import {
     InputInlineResult,
     InputMediaLike,
     InputPeerLike,
+    InputReaction,
     InputStickerSetItem,
     MaybeDynamic,
     Message,
@@ -1216,7 +1217,7 @@ export interface TelegramClient extends BaseTelegramClient {
              * Defaults to `''` (empty string)
              *
              * > **Note**: Only used for these values of `filter`:
-             * > `all`, `banned`, `restricted`, `contacts`
+             * > `all, banned, restricted, mention, contacts`
              */
             query?: string
 
@@ -2674,12 +2675,7 @@ export interface TelegramClient extends BaseTelegramClient {
             /**
              * Get only reactions with the specified emoji
              */
-            emoji?: string
-
-            /**
-             * Get only reactions with the specified custom emoji
-             */
-            customEmoji?: tl.Long
+            emoji?: InputReaction
 
             /**
              * Limit the number of events returned.
@@ -3186,16 +3182,11 @@ export interface TelegramClient extends BaseTelegramClient {
      *
      * @param chatId  Chat ID with the message to react to
      * @param message  Message ID to react to
-     * @param emoji  Reaction emoji (if `tl.Long` then this is a custom emoji) or `null` to remove
+     * @param emoji  Reaction emoji (or `null` to remove reaction)
      * @param big  (default: `false`) Whether to use a big reaction
      * @returns  Message to which the reaction was sent
      */
-    sendReaction(
-        chatId: InputPeerLike,
-        message: number,
-        emoji: string | tl.Long | null,
-        big?: boolean,
-    ): Promise<Message>
+    sendReaction(chatId: InputPeerLike, message: number, emoji?: InputReaction | null, big?: boolean): Promise<Message>
     /**
      * Send s previously scheduled message.
      *
diff --git a/packages/client/src/methods/_imports.ts b/packages/client/src/methods/_imports.ts
index 1bd68c42..f15fc22b 100644
--- a/packages/client/src/methods/_imports.ts
+++ b/packages/client/src/methods/_imports.ts
@@ -41,6 +41,7 @@ import {
     InputInlineResult,
     InputMediaLike,
     InputPeerLike,
+    InputReaction,
     InputStickerSetItem,
     MaybeDynamic,
     Message,
diff --git a/packages/client/src/methods/messages/get-reaction-users.ts b/packages/client/src/methods/messages/get-reaction-users.ts
index e7c5c328..2d7250d0 100644
--- a/packages/client/src/methods/messages/get-reaction-users.ts
+++ b/packages/client/src/methods/messages/get-reaction-users.ts
@@ -1,7 +1,7 @@
 import { tl } from '@mtcute/core'
 
 import { TelegramClient } from '../../client'
-import { InputPeerLike, PeerReaction, PeersIndex } from '../../types'
+import { InputPeerLike, InputReaction, normalizeInputReaction, PeerReaction, PeersIndex } from '../../types'
 
 /**
  * Get users who have reacted to the message.
@@ -19,12 +19,7 @@ export async function* getReactionUsers(
         /**
          * Get only reactions with the specified emoji
          */
-        emoji?: string
-
-        /**
-         * Get only reactions with the specified custom emoji
-         */
-        customEmoji?: tl.Long
+        emoji?: InputReaction
 
         /**
          * Limit the number of events returned.
@@ -50,23 +45,7 @@ export async function* getReactionUsers(
     const total = params.limit || Infinity
     const chunkSize = Math.min(params.chunkSize ?? 100, total)
 
-    let reaction: tl.TypeReaction
-
-    if (params.customEmoji) {
-        reaction = {
-            _: 'reactionCustomEmoji',
-            documentId: params.customEmoji,
-        }
-    } else if (params.emoji) {
-        reaction = {
-            _: 'reactionEmoji',
-            emoticon: params.emoji,
-        }
-    } else {
-        reaction = {
-            _: 'reactionEmpty',
-        }
-    }
+    const reaction = normalizeInputReaction(params.emoji)
 
     for (;;) {
         const res: tl.RpcCallReturn['messages.getMessageReactionsList'] = await this.call({
diff --git a/packages/client/src/methods/messages/send-reaction.ts b/packages/client/src/methods/messages/send-reaction.ts
index 840ed88a..bd3aec5b 100644
--- a/packages/client/src/methods/messages/send-reaction.ts
+++ b/packages/client/src/methods/messages/send-reaction.ts
@@ -1,9 +1,5 @@
-import Long from 'long'
-
-import { MtTypeAssertionError, tl } from '@mtcute/core'
-
 import { TelegramClient } from '../../client'
-import { InputPeerLike, Message, PeersIndex } from '../../types'
+import { InputPeerLike, InputReaction, Message, normalizeInputReaction } from '../../types'
 import { assertIsUpdatesGroup } from '../../utils/updates-utils'
 
 /**
@@ -11,7 +7,7 @@ import { assertIsUpdatesGroup } from '../../utils/updates-utils'
  *
  * @param chatId  Chat ID with the message to react to
  * @param message  Message ID to react to
- * @param emoji  Reaction emoji (if `tl.Long` then this is a custom emoji) or `null` to remove
+ * @param emoji  Reaction emoji (or `null` to remove reaction)
  * @param big  Whether to use a big reaction
  * @returns  Message to which the reaction was sent
  * @internal
@@ -20,26 +16,10 @@ export async function sendReaction(
     this: TelegramClient,
     chatId: InputPeerLike,
     message: number,
-    emoji: string | tl.Long | null,
+    emoji?: InputReaction | null,
     big = false,
 ): Promise<Message> {
-    let reaction: tl.TypeReaction
-
-    if (Long.isLong(emoji)) {
-        reaction = {
-            _: 'reactionCustomEmoji',
-            documentId: emoji,
-        }
-    } else if (emoji) {
-        reaction = {
-            _: 'reactionEmoji',
-            emoticon: emoji,
-        }
-    } else {
-        reaction = {
-            _: 'reactionEmpty',
-        }
-    }
+    const reaction = normalizeInputReaction(emoji)
 
     const res = await this.call({
         _: 'messages.sendReaction',
@@ -57,17 +37,5 @@ export async function sendReaction(
     // idk why, they contain literally the same data
     // so we can just return the message from the first one
 
-    this._handleUpdate(res, true)
-
-    const upd = res.updates.find((it) => it._ === 'updateEditChannelMessage') as
-        | tl.RawUpdateEditChannelMessage
-        | undefined
-
-    if (!upd) {
-        throw new MtTypeAssertionError('messages.sendReaction (@ .updates[*])', 'updateEditChannelMessage', 'undefined')
-    }
-
-    const peers = PeersIndex.from(res)
-
-    return new Message(this, upd.message, peers)
+    return this._findMessageInUpdate(res, true)
 }
diff --git a/packages/client/src/types/messages/reactions.ts b/packages/client/src/types/messages/reactions.ts
index 8fb81c60..19199ed0 100644
--- a/packages/client/src/types/messages/reactions.ts
+++ b/packages/client/src/types/messages/reactions.ts
@@ -5,6 +5,31 @@ import { TelegramClient } from '../../client'
 import { makeInspectable } from '../../utils'
 import { PeersIndex, User } from '../peers'
 
+/**
+ * Emoji describing a reaction.
+ *
+ * Either a `string` with a unicode emoji, or a `tl.Long` for a custom emoji
+ */
+export type InputReaction = string | tl.Long
+
+export function normalizeInputReaction(reaction?: InputReaction | null): tl.TypeReaction {
+    if (typeof reaction === 'string') {
+        return {
+            _: 'reactionEmoji',
+            emoticon: reaction,
+        }
+    } else if (reaction) {
+        return {
+            _: 'reactionCustomEmoji',
+            documentId: reaction,
+        }
+    }
+
+    return {
+        _: 'reactionEmpty',
+    }
+}
+
 export class PeerReaction {
     constructor(
         readonly client: TelegramClient,