diff --git a/app/Actions/User/FollowUserAction.php b/app/Actions/User/FollowUserAction.php
index 6800df1..04b4384 100644
--- a/app/Actions/User/FollowUserAction.php
+++ b/app/Actions/User/FollowUserAction.php
@@ -4,11 +4,16 @@
 
 use App\Models\User;
 use App\Notifications\NewFollowerNotification;
+use Symfony\Component\HttpKernel\Exception\HttpException;
 
 class FollowUserAction
 {
     public function execute(User $follower, User $following): void
     {
+        if ($follower->is($following)) {
+            throw new HttpException(400, 'No one follows himself!');
+        }
+
         $userIsFollowed = $follower
             ->following()
             ->where('following_id', $following->id)
diff --git a/tests/Feature/UserFollowersControllerTest.php b/tests/Feature/UserFollowersControllerTest.php
index f797c21..eee8f5e 100644
--- a/tests/Feature/UserFollowersControllerTest.php
+++ b/tests/Feature/UserFollowersControllerTest.php
@@ -87,4 +87,11 @@ public function test_user_unfollows_following_user()
 
         $this->assertDatabaseEmpty('followers');
     }
+
+    public function test_user_cannot_follow_himself()
+    {
+        $this
+            ->postJson('api/users/1/followers')
+            ->assertStatus(400);
+    }
 }