diff --git a/src/insets/InsetIndex.h b/src/insets/InsetIndex.h
index 1f185172ae..4391c4f003 100644
--- a/src/insets/InsetIndex.h
+++ b/src/insets/InsetIndex.h
@@ -40,6 +40,10 @@ private:
 	int latex(odocstream &, OutputParams const &) const;
 	/// should paragraph indendation be omitted in any case?
 	bool neverIndent() const { return true; }
+	/// should paragraphs be forced to use the empty layout?
+	virtual bool forcePlainLayout(idx_type = 0) const { return true; }
+	/// should the user be allowed to customize alignment, etc.?
+	virtual bool allowParagraphCustomization(idx_type = 0) const { return false; }
 	///
 	void textString(odocstream &) const;
 	///