diff --git a/Espera.View/DragDropExtension.cs b/Espera.View/DragDropExtension.cs
index 8ac6ee6a..82a69643 100644
--- a/Espera.View/DragDropExtension.cs
+++ b/Espera.View/DragDropExtension.cs
@@ -113,7 +113,7 @@ private static void OnContainerPreviewDragOver(object sender, DragEventArgs e)
             // restrict to scroll at two places at a time (how would that go anyways) but only syncs
             // them in time.... that's fair enough; (300ms for ListBox, 20ms for Content)
             TimeSpan span = DateTime.UtcNow - s_lastTime;
-            if (span.Milliseconds < (itemwise ? 300 : 20))
+            if (span.TotalMilliseconds < (itemwise ? 300 : 20))
                 return;
             s_lastTime = DateTime.UtcNow;
 
@@ -160,4 +160,4 @@ private static void Unsubscribe(FrameworkElement container)
 
         #endregion ScrollOnDragDropProperty
     }
-}
\ No newline at end of file
+}