diff --git a/src/ParagraphParameters.h b/src/ParagraphParameters.h
index a57b433611..ccb131c9c6 100644
--- a/src/ParagraphParameters.h
+++ b/src/ParagraphParameters.h
@@ -39,8 +39,6 @@ public:
 	///
 	ParagraphParameters();
 	///
-	friend LyXErr & operator<<(LyXErr & os, ParagraphParameters const & cur);
-	///
 	void clear();
 	///
 	bool sameLayout(ParagraphParameters const &) const;