diff --git a/app/Http/Controllers/TicketController.php b/app/Http/Controllers/TicketController.php
index 66931e0..31c9c0d 100644
--- a/app/Http/Controllers/TicketController.php
+++ b/app/Http/Controllers/TicketController.php
@@ -17,7 +17,7 @@ use App\Models\Project;
 use App\Models\Ticket;
 use App\Models\User;
 use Exception;
-use Illuminate\Database\QueryException;
+use Illuminate\Database\Eloquent\ModelNotFoundException;
 use Illuminate\Support\Facades\Auth;
 use Illuminate\Support\Facades\File;
 use Illuminate\Support\Facades\Mail;
@@ -233,7 +233,7 @@ class TicketController extends Controller
                     $user,
                     new TicketMention($ticket, $message->message)
                 );
-            } catch (QueryException $e) {
+            } catch (ModelNotFoundException $e) {
                 continue;
             }
         }