diff --git a/back/volume/src/users/users.controller.ts b/back/volume/src/users/users.controller.ts
index 899c695..874f9aa 100644
--- a/back/volume/src/users/users.controller.ts
+++ b/back/volume/src/users/users.controller.ts
@@ -138,14 +138,12 @@ export class UsersController {
     @FtUser() profile: Profile,
       @Param('username') username: string
   ): Promise<void> {
-    const target: User | null = await this.usersService.findUserByName(
-      username
-    )
-    if (target == null) throw new BadRequestException('Target unknown.')
-    if (profile.id === target.ftId) {
+    const target: User | null = await this.usersService.findUserByName( username )
+    if (!target) throw new BadRequestException(`User ${username} not found.`)
+    if (+profile.id === target.ftId)
       throw new BadRequestException("You can't invit yourself.")
-    }
-    await this.usersService.invit(profile.id, target.id)
+    const ret: string = await this.usersService.invit(profile.id, target.ftId);
+    if (ret !== "OK") throw new BadRequestException(ret)
   }
 
   @Get('avatar/:id')
diff --git a/back/volume/src/users/users.service.ts b/back/volume/src/users/users.service.ts
index 7526dd0..a38ea6a 100644
--- a/back/volume/src/users/users.service.ts
+++ b/back/volume/src/users/users.service.ts
@@ -142,7 +142,7 @@ export class UsersService {
     return leaderboard.findIndex((user) => user.ftId === ftId);
   }
 
-  async invit(ftId: number, targetFtId: number): Promise<void> {
+  async invit(ftId: number, targetFtId: number): Promise<string> {
     const user: User | null = await this.usersRepository.findOne({
       where: { ftId },
       relations: {
@@ -150,9 +150,9 @@ export class UsersService {
         friends: true,
       },
     });
-    if (user == null) throw new BadRequestException("User not found.");
+    if (!user) throw new BadRequestException("User not found.");
     if (user.friends.findIndex((friend) => friend.ftId === targetFtId) !== -1) {
-      throw new BadRequestException("You are already friends.");
+      return "You are already friends.";
     }
     const target: User | null = await this.usersRepository.findOne({
       where: { ftId: targetFtId },
@@ -161,16 +161,20 @@ export class UsersService {
         friends: true,
       },
     });
-    if (target == null) throw new BadRequestException("Target not found.");
+    if (!target) return "Target not found.";
     const id = user.followers.findIndex(
       (follower) => follower.ftId === targetFtId
     );
-    if (id !== -1) {
+    if (target.followers.findIndex((follower) => follower.ftId === user.ftId) !== -1) {
+      return "Invitation already sent.";
+    }else if (user.followers.findIndex((follower) => follower.ftId === targetFtId) !== -1) {
       user.friends.push(target);
-      if (user.ftId !== target.ftId) target.friends.push(user);
+      target.friends.push(user);
       user.followers.slice(id, 1);
       await this.usersRepository.save(user);
-    } else target.followers.push(user);
+    } else
+      target.followers.push(user);
     await this.usersRepository.save(target);
+    return "OK"
   }
 }
diff --git a/front/volume/src/App.svelte b/front/volume/src/App.svelte
index 14670ec..d8ffb5e 100644
--- a/front/volume/src/App.svelte
+++ b/front/volume/src/App.svelte
@@ -250,7 +250,7 @@
       {/if}
       {#if appState === APPSTATE.HISTORY_ID}
         <div on:click={resetAppState} on:keydown={resetAppState}>
-          <MatchHistory {matches} />
+          <MatchHistory username={$store.username} {matches} />
         </div>
       {/if}
       {#if appState === APPSTATE.PROFILE}
diff --git a/front/volume/src/components/Friends.svelte b/front/volume/src/components/Friends.svelte
index f5a37d7..39bc9c0 100644
--- a/front/volume/src/components/Friends.svelte
+++ b/front/volume/src/components/Friends.svelte
@@ -19,7 +19,8 @@
     if (response.ok) {
       alert("Invitation send.");
     } else {
-      alert("Invitation failed.");
+      const error = (await response.json()).message
+      alert("Invitation failed: " +  error);;
     }
   }
 </script>
diff --git a/front/volume/src/components/MatchHistory.svelte b/front/volume/src/components/MatchHistory.svelte
index 1475701..86216bb 100644
--- a/front/volume/src/components/MatchHistory.svelte
+++ b/front/volume/src/components/MatchHistory.svelte
@@ -9,6 +9,7 @@
 </script>
 
 <script lang="ts">
+  export let username: string = "Global";
   export let matches: Array<Match> = [];
   function displayDate(str: string) {
     const splitT = str.split("T");
@@ -25,7 +26,7 @@
         <table>
           <thead>
             <tr>
-              <th colspan="3">Last 10 monkey games</th>
+              <th colspan="3">{username}'s last matchs</th>
             </tr>
           </thead>
           <tbody>