diff --git a/src/insets/InsetFlex.cpp b/src/insets/InsetFlex.cpp
index 3b34be760a..5931bb4eba 100644
--- a/src/insets/InsetFlex.cpp
+++ b/src/insets/InsetFlex.cpp
@@ -61,12 +61,6 @@ void InsetFlex::write(ostream & os) const
 }
 
 
-int InsetFlex::plaintext(odocstream & os, OutputParams const & runparams) const
-{
-	return InsetText::plaintext(os, runparams);
-}
-
-
 int InsetFlex::docbook(odocstream & os, OutputParams const & runparams) const
 {
 	ParagraphList::const_iterator const beg = paragraphs().begin();
diff --git a/src/insets/InsetFlex.h b/src/insets/InsetFlex.h
index bdf59f0fed..4b70aba2aa 100644
--- a/src/insets/InsetFlex.h
+++ b/src/insets/InsetFlex.h
@@ -34,8 +34,6 @@ public:
 	///
 	void write(std::ostream &) const;
 
-	///
-	int plaintext(odocstream &, OutputParams const &) const;
 	///
 	int docbook(odocstream &, OutputParams const &) const;
 	/// the string that is passed to the TOC