diff --git a/libs/ardour/ardour/export_formats.h b/libs/ardour/ardour/export_formats.h
index eecec5e21e..7a525f0c7e 100644
--- a/libs/ardour/ardour/export_formats.h
+++ b/libs/ardour/ardour/export_formats.h
@@ -355,7 +355,7 @@ public:
 	}
 };
 
-class LIBARDOUR_API ExportFormatOggOpus : public ExportFormat, public HasSampleFormat, public HasCodecQuality
+class LIBARDOUR_API ExportFormatOggOpus : public ExportFormat, public HasCodecQuality
 {
 public:
 	ExportFormatOggOpus ();
diff --git a/libs/ardour/export_formats.cc b/libs/ardour/export_formats.cc
index 9e550bdff0..1e9e22120b 100644
--- a/libs/ardour/export_formats.cc
+++ b/libs/ardour/export_formats.cc
@@ -387,7 +387,6 @@ ExportFormatBWF::set_compatibility_state (ExportFormatCompatibility const & comp
 /*** OPUS ***/
 
 ExportFormatOggOpus::ExportFormatOggOpus ()
-	: HasSampleFormat (sample_formats)
 {
 	SF_INFO sf_info;
 	sf_info.channels = 2;