diff --git a/Aaru.Gui/ViewModels/Windows/ImageConvertViewModel.cs b/Aaru.Gui/ViewModels/Windows/ImageConvertViewModel.cs
index 4185b0d26..2e6c92767 100644
--- a/Aaru.Gui/ViewModels/Windows/ImageConvertViewModel.cs
+++ b/Aaru.Gui/ViewModels/Windows/ImageConvertViewModel.cs
@@ -459,7 +459,7 @@ public sealed partial class ImageConvertViewModel : ViewModelBase
     internal void Stop()
     {
         _cancel = true;
-        _converter.Abort();
+        _converter?.Abort();
         StopEnabled = false;
     }