diff --git a/src/insets/InsetERT.cpp b/src/insets/InsetERT.cpp
index fb6f95a26e..d1e15bae8b 100644
--- a/src/insets/InsetERT.cpp
+++ b/src/insets/InsetERT.cpp
@@ -184,7 +184,7 @@ string InsetERT::params2string(CollapseStatus status)
 }
 
 
-docstring InsetERT::xhtml(odocstream &, OutputParams const &) const
+docstring InsetERT::xhtml(XHTMLStream &, OutputParams const &) const
 {
 	return docstring();
 }
diff --git a/src/insets/InsetERT.h b/src/insets/InsetERT.h
index c14677b716..3f38f0e70e 100644
--- a/src/insets/InsetERT.h
+++ b/src/insets/InsetERT.h
@@ -51,7 +51,7 @@ private:
 	///
 	int docbook(odocstream &, OutputParams const &) const;
 	///
-	docstring xhtml(odocstream &, OutputParams const &) const;
+	docstring xhtml(XHTMLStream &, OutputParams const &) const;
 	///
 	void validate(LaTeXFeatures &) const {}
 	///