diff --git a/src/insets/InsetIndex.cpp b/src/insets/InsetIndex.cpp
index f5a1e4d306..398281d2a2 100644
--- a/src/insets/InsetIndex.cpp
+++ b/src/insets/InsetIndex.cpp
@@ -165,19 +165,12 @@ void InsetIndex::write(ostream & os) const
 }
 
 
-void InsetIndex::textString(odocstream & os) const
-{
-	os << text().asString(0, 1, AS_STR_LABEL | AS_STR_INSETS);
-}
-
-
 void InsetIndex::addToToc(DocIterator const & cpit)
 {
 	DocIterator pit = cpit;
 	pit.push_back(CursorSlice(*this));
-	odocstringstream ods;
-	textString(ods);
-	buffer().tocBackend().toc("index").push_back(TocItem(pit, 0, ods.str()));
+	docstring const item = text().asString(0, 1, AS_STR_LABEL | AS_STR_INSETS);
+	buffer().tocBackend().toc("index").push_back(TocItem(pit, 0, item));
 	// Proceed with the rest of the inset.
 	InsetCollapsable::addToToc(cpit);
 }
diff --git a/src/insets/InsetIndex.h b/src/insets/InsetIndex.h
index 4391c4f003..5f4492884f 100644
--- a/src/insets/InsetIndex.h
+++ b/src/insets/InsetIndex.h
@@ -45,8 +45,6 @@ private:
 	/// should the user be allowed to customize alignment, etc.?
 	virtual bool allowParagraphCustomization(idx_type = 0) const { return false; }
 	///
-	void textString(odocstream &) const;
-	///
 	void addToToc(DocIterator const &);
 	///
 	Inset * clone() const { return new InsetIndex(*this); }