diff --git a/srcs/requirements/nestjs/api_back/src/chat/chat.controller.ts b/srcs/requirements/nestjs/api_back/src/chat/chat.controller.ts
index 99c1e2e7..bf2826cd 100644
--- a/srcs/requirements/nestjs/api_back/src/chat/chat.controller.ts
+++ b/srcs/requirements/nestjs/api_back/src/chat/chat.controller.ts
@@ -532,10 +532,25 @@ export class ChatController {
 	{
 		printCaller("- in ");
 
+		await this.chatService.setBlockUser(req.user.username, username);
 		let user_socket: socketDto = this.chatGateway.sockets.get(req.user.username);
 		user_socket.join(`${username}_not_emit`);
 
-		res.status(HttpStatus.OK).json({ message: "successfull unmute" });
+		res.status(HttpStatus.OK).json({ message: "successfull block" });
+		printCaller("- out ");
+	}
+
+	@UseGuards(AuthenticateGuard)
+	@UseGuards(TwoFactorGuard)
+	@Post('unblock')
+	async unBlockUser(@Body('username') username: string, @Req() req, @Res() res): Promise<void>
+	{
+		printCaller("- in ");
+
+		let user_socket: socketDto = this.chatGateway.sockets.get(req.user.username);
+		user_socket.leave(`${username}_not_emit`);
+
+		res.status(HttpStatus.OK).json({ message: "successfull unblock" });
 		printCaller("- out ");
 	}
 
diff --git a/srcs/requirements/nestjs/api_back/src/chat/chat.service.ts b/srcs/requirements/nestjs/api_back/src/chat/chat.service.ts
index c2992c8d..7dae88f3 100644
--- a/srcs/requirements/nestjs/api_back/src/chat/chat.service.ts
+++ b/srcs/requirements/nestjs/api_back/src/chat/chat.service.ts
@@ -298,6 +298,14 @@ export class ChatService {
 		printCaller("-- out ");
 	}
 
+	async setBlockUser(username: string, to_block_username: string): Promise<void>
+	{
+		printCaller("-- in ");
+
+
+		printCaller("-- out ");
+	}
+
 	/* ADDERS *************************************************
 	*/
 
diff --git a/srcs/requirements/nestjs/api_back/src/users/entities/user.entity.ts b/srcs/requirements/nestjs/api_back/src/users/entities/user.entity.ts
index 798b5253..7d4684ed 100644
--- a/srcs/requirements/nestjs/api_back/src/users/entities/user.entity.ts
+++ b/srcs/requirements/nestjs/api_back/src/users/entities/user.entity.ts
@@ -23,7 +23,7 @@ export class User {
 	email: string;
 
 	@Column()
-	image_url : string;
+	image_url: string;
 
 	@Column({ nullable: true })
 	phone: string;
@@ -57,4 +57,7 @@ export class User {
 
 	@Column({ nullable: true })
 	currentRoom: string; // chatroom name
+
+  @Column("simple-array", { nullable: true })
+	blockedUsers: string[]; // usernames
 }
diff --git a/srcs/requirements/svelte/api_front/src/pieces/chat/Layout_user.svelte b/srcs/requirements/svelte/api_front/src/pieces/chat/Layout_user.svelte
index ea5baffc..45e3f9cc 100644
--- a/srcs/requirements/svelte/api_front/src/pieces/chat/Layout_user.svelte
+++ b/srcs/requirements/svelte/api_front/src/pieces/chat/Layout_user.svelte
@@ -1,7 +1,7 @@
 <script lang="ts">
 
 	import { layout, current_room, settings_user } from './Store_chat';
-	import { get_is_admin, make_admin, set_block_user } from './Request_rooms';
+	import { get_is_admin, make_admin, set_block_user, remove_block_user } from './Request_rooms';
 	import type { FetchResponse } from './Types_chat';
 	import { to_print } from './Utils_chat';
 	import Button from './Element_button.svelte';
@@ -37,6 +37,12 @@
 		await set_block_user($settings_user);
 		layout.set("room");
 	}
+	async function unblock_user()
+	{
+		to_print("in unblock_user");
+		await remove_block_user($settings_user);
+		layout.set("room");
+	}
 	async function make_user_admin()
 	{
 		to_print("in make_user_admin");
@@ -88,6 +94,9 @@
 		<Button on:click={block_user}>
 			block
 		</Button>
+		<Button on:click={unblock_user}>
+			unblock
+		</Button>
 
 		{#if is_admin && back === "room_set" && $current_room.type !== "direct"}
 			<Button on:click={make_user_admin}>
diff --git a/srcs/requirements/svelte/api_front/src/pieces/chat/Request_rooms.ts b/srcs/requirements/svelte/api_front/src/pieces/chat/Request_rooms.ts
index e7ae8799..bfa5cc30 100644
--- a/srcs/requirements/svelte/api_front/src/pieces/chat/Request_rooms.ts
+++ b/srcs/requirements/svelte/api_front/src/pieces/chat/Request_rooms.ts
@@ -231,3 +231,10 @@ export async function set_block_user(username: string): Promise<void>
 	await fetch_chat_request('block', FetchMethod.POST, {username: username} );
 }
 
+export async function remove_block_user(username: string): Promise<void>
+{
+	to_print("in set_block_user");
+
+	await fetch_chat_request('unblock', FetchMethod.POST, {username: username} );
+}
+