diff --git a/Mirivoice/Views/SingleLineEditorView.axaml.cs b/Mirivoice/Views/SingleLineEditorView.axaml.cs
index 41e7d79..30c3899 100644
--- a/Mirivoice/Views/SingleLineEditorView.axaml.cs
+++ b/Mirivoice/Views/SingleLineEditorView.axaml.cs
@@ -29,7 +29,11 @@ public SingleLineEditorView(LineBoxView l, bool FirstUpdate = true)
 
     private async void LineTextChanging(object sender, TextChangingEventArgs e)
     {
-        
+        if (l is null)
+        {
+            Log.Warning("LineBoxView is null.");
+            return;
+        }
         l.DeActivatePhonemizer = false;
         if (FirstUpdate)
         {