diff --git a/src/insets/InsetOptArg.cpp b/src/insets/InsetOptArg.cpp
index 53d64244c6..544b213aae 100644
--- a/src/insets/InsetOptArg.cpp
+++ b/src/insets/InsetOptArg.cpp
@@ -51,7 +51,7 @@ int InsetOptArg::docbook(odocstream &, OutputParams const &) const
 }
 
 
-docstring InsetOptArg::xhtml(odocstream &, OutputParams const &) const
+docstring InsetOptArg::xhtml(XHTMLStream &, OutputParams const &) const
 {
 	return docstring();
 }
diff --git a/src/insets/InsetOptArg.h b/src/insets/InsetOptArg.h
index ca78e3b30a..2584049a61 100644
--- a/src/insets/InsetOptArg.h
+++ b/src/insets/InsetOptArg.h
@@ -46,7 +46,7 @@ private:
 	/// Standard DocBook output -- short-circuited
 	int docbook(odocstream &, OutputParams const &) const;
 	/// Standard XHTML output -- short-circuited
-	docstring xhtml(odocstream &, OutputParams const &) const;
+	docstring xhtml(XHTMLStream &, OutputParams const &) const;
 	/// Write out to the .lyx file
 	void write(std::ostream & os) const;
 	/// should paragraph indendation be ommitted in any case?
diff --git a/src/insets/InsetPhantom.cpp b/src/insets/InsetPhantom.cpp
index 431dbd8584..d21b0b1bf5 100644
--- a/src/insets/InsetPhantom.cpp
+++ b/src/insets/InsetPhantom.cpp
@@ -358,7 +358,7 @@ int InsetPhantom::docbook(odocstream & os, OutputParams const & runparams) const
 }
 
 
-docstring InsetPhantom::xhtml(odocstream &, OutputParams const &) const
+docstring InsetPhantom::xhtml(XHTMLStream &, OutputParams const &) const
 {
 	return docstring();
 }
diff --git a/src/insets/InsetPhantom.h b/src/insets/InsetPhantom.h
index af32517be6..d27721f098 100644
--- a/src/insets/InsetPhantom.h
+++ b/src/insets/InsetPhantom.h
@@ -82,7 +82,7 @@ private:
 	///
 	int docbook(odocstream &, OutputParams const &) const;
 	/// Makes no sense fof XHTML.
-	docstring xhtml(odocstream &, OutputParams const &) const;
+	docstring xhtml(XHTMLStream &, OutputParams const &) const;
 	///
 	bool getStatus(Cursor &, FuncRequest const &, FuncStatus &) const;
 	///