diff --git a/src/Core/Pages/Accounts/LoginPasswordlessViewModel.cs b/src/Core/Pages/Accounts/LoginPasswordlessViewModel.cs
index a5809659c..95033c7e1 100644
--- a/src/Core/Pages/Accounts/LoginPasswordlessViewModel.cs
+++ b/src/Core/Pages/Accounts/LoginPasswordlessViewModel.cs
@@ -77,6 +77,7 @@ namespace Bit.App.Pages
             {
                 _requestTimeCts?.Cancel();
                 _requestTimeCts?.Dispose();
+                _requestTimeCts = null;
             }
             catch (Exception ex)
             {
diff --git a/src/Core/Utilities/TimerTask.cs b/src/Core/Utilities/TimerTask.cs
index 27e0b81af..f2ac98778 100644
--- a/src/Core/Utilities/TimerTask.cs
+++ b/src/Core/Utilities/TimerTask.cs
@@ -1,9 +1,4 @@
-using System;
-using System.Threading;
-using System.Threading.Tasks;
-using Bit.Core.Abstractions;
-using Microsoft.Maui.Controls;
-using Microsoft.Maui;
+using Bit.Core.Abstractions;
 
 namespace Bit.App.Utilities
 {
@@ -37,7 +32,7 @@ namespace Bit.App.Utilities
                 {
                     while (!_cancellationTokenSource.IsCancellationRequested)
                     {
-                        await Device.InvokeOnMainThreadAsync(async () =>
+                        await MainThread.InvokeOnMainThreadAsync(async () =>
                         {
                             if (!_cancellationTokenSource.IsCancellationRequested)
                             {