diff --git a/src/insets/InsetIndex.cpp b/src/insets/InsetIndex.cpp
index 28f0eafe7b..194ccb8eca 100644
--- a/src/insets/InsetIndex.cpp
+++ b/src/insets/InsetIndex.cpp
@@ -288,11 +288,7 @@ docstring InsetIndex::toolTip(BufferView const &, int, int) const
 		tip += ")";
 	}
 	tip += ": ";
-	OutputParams rp(&buffer().params().encoding());
-	odocstringstream ods;
-	InsetText::plaintext(ods, rp);
-	tip += ods.str();
-	return wrapParas(tip);
+	return InsetText::toolTipText(tip);
 }
 
 
diff --git a/src/insets/InsetPhantom.cpp b/src/insets/InsetPhantom.cpp
index 8a6d2e68db..a3c5735998 100644
--- a/src/insets/InsetPhantom.cpp
+++ b/src/insets/InsetPhantom.cpp
@@ -299,13 +299,10 @@ bool InsetPhantom::getStatus(Cursor & cur, FuncRequest const & cmd,
 
 docstring InsetPhantom::toolTip(BufferView const &, int, int) const
 {
-	OutputParams rp(&buffer().params().encoding());
-	odocstringstream ods;
-	InsetCollapsable::plaintext(ods, rp);
-	docstring content_tip = support::wrapParas(ods.str());
+	docstring const tip = InsetText::toolTipText();
 	docstring res = phantomtranslator_loc().find(params_.type);
-	if (!content_tip.empty())
-		res += from_ascii(": ") + "\n" + content_tip;
+	if (!tip.empty())
+		res += from_ascii(": ") + "\n" + tip;
 	return res;
 }
 
diff --git a/src/insets/InsetText.cpp b/src/insets/InsetText.cpp
index 0a53c7bd06..a80c96eecc 100644
--- a/src/insets/InsetText.cpp
+++ b/src/insets/InsetText.cpp
@@ -820,11 +820,12 @@ docstring InsetText::contextMenu(BufferView const &, int, int) const
 }
 
 
-docstring InsetText::toolTipText() const
+docstring InsetText::toolTipText(docstring prefix) const
 {
 	static unsigned int max_length = 400; // five 80 column lines
 	OutputParams rp(&buffer().params().encoding());
 	odocstringstream oss;
+	oss << prefix;
 
 	ParagraphList::const_iterator beg = paragraphs().begin();
 	ParagraphList::const_iterator end = paragraphs().end();
diff --git a/src/insets/InsetText.h b/src/insets/InsetText.h
index 5743be2f51..35904398a8 100644
--- a/src/insets/InsetText.h
+++ b/src/insets/InsetText.h
@@ -191,7 +191,9 @@ public:
 	///
 	void completionPosAndDim(Cursor const &, int & x, int & y, Dimension & dim) const;
 	/// returns the text to be used as tooltip
-	docstring toolTipText() const;
+	/// \param prefix: a string that will preced the tooltip,
+	/// e.g., "Index: ".
+	docstring toolTipText(docstring prefix = from_ascii("")) const;
 
 	///
 	virtual docstring contextMenu(BufferView const & bv, int x, int y) const;