diff --git a/lib/src/widgets/raw_editor.dart b/lib/src/widgets/raw_editor.dart
index faec38ac..55cc2351 100644
--- a/lib/src/widgets/raw_editor.dart
+++ b/lib/src/widgets/raw_editor.dart
@@ -962,7 +962,6 @@ class RawEditorState extends EditorState
         return;
       }
       final text = textEditingValue.text;
-      assert(selection != null);
       if (!selection.isValid) {
         return;
       }