diff --git a/src/plugins/qmldesigner/components/texteditor/texteditorview.cpp b/src/plugins/qmldesigner/components/texteditor/texteditorview.cpp
index fb33794ea80..1921487aa0b 100644
--- a/src/plugins/qmldesigner/components/texteditor/texteditorview.cpp
+++ b/src/plugins/qmldesigner/components/texteditor/texteditorview.cpp
@@ -80,8 +80,7 @@ void TextEditorView::modelAttached(Model *model)
     AbstractView::modelAttached(model);
 
     auto textEditor = Utils::UniqueObjectLatePtr<TextEditor::BaseTextEditor>(
-        static_cast<TextEditor::BaseTextEditor *>(
-            QmlDesignerPlugin::instance()->currentDesignDocument()->textEditor()->duplicate()));
+        QmlDesignerPlugin::instance()->currentDesignDocument()->textEditor()->duplicate());
 
     // Set the context of the text editor, but we add another special context to override shortcuts.
     Core::Context context = textEditor->context();
diff --git a/src/plugins/texteditor/texteditor.cpp b/src/plugins/texteditor/texteditor.cpp
index 92c27723b99..f348aa7ce61 100644
--- a/src/plugins/texteditor/texteditor.cpp
+++ b/src/plugins/texteditor/texteditor.cpp
@@ -8940,11 +8940,11 @@ BaseTextEditor *TextEditorFactoryPrivate::createEditorHelper(const TextDocumentP
     return editor;
 }
 
-IEditor *BaseTextEditor::duplicate()
+BaseTextEditor *BaseTextEditor::duplicate()
 {
     // Use new standard setup if that's available.
     if (d->m_origin) {
-        IEditor *dup = d->m_origin->duplicateTextEditor(this);
+        BaseTextEditor *dup = d->m_origin->duplicateTextEditor(this);
         emit editorDuplicated(dup);
         return dup;
     }
diff --git a/src/plugins/texteditor/texteditor.h b/src/plugins/texteditor/texteditor.h
index dc492eca21b..98bddb84b91 100644
--- a/src/plugins/texteditor/texteditor.h
+++ b/src/plugins/texteditor/texteditor.h
@@ -110,7 +110,7 @@ public:
     // IEditor
     Core::IDocument *document() const override;
 
-    IEditor *duplicate() override;
+    BaseTextEditor *duplicate() override;
 
     QByteArray saveState() const override;
     void restoreState(const QByteArray &state) override;