diff --git a/headers/os/codec/WriterPlugin.h b/headers/os/codec/WriterPlugin.h
index f906bc913d..3112d19cf8 100644
--- a/headers/os/codec/WriterPlugin.h
+++ b/headers/os/codec/WriterPlugin.h
@@ -47,7 +47,6 @@ private:
 	virtual void				_ReservedWriter4();
 	virtual void				_ReservedWriter5();
 
-public: // XXX for test programs only
 			void				Setup(BDataIO* target);
 
 			BDataIO*			fTarget;
diff --git a/src/add-ons/media/plugins/ffmpeg/AVFormatWriter.cpp b/src/add-ons/media/plugins/ffmpeg/AVFormatWriter.cpp
index 61e4c14a77..59153ce65a 100644
--- a/src/add-ons/media/plugins/ffmpeg/AVFormatWriter.cpp
+++ b/src/add-ons/media/plugins/ffmpeg/AVFormatWriter.cpp
@@ -590,7 +590,7 @@ AVFormatWriter::_Write(void* cookie, uint8* buffer, int bufferSize)
 
 	AVFormatWriter* writer = reinterpret_cast<AVFormatWriter*>(cookie);
 
-	ssize_t written = writer->fTarget->Write(buffer, bufferSize);
+	ssize_t written = writer->Target()->Write(buffer, bufferSize);
 
 	TRACE_IO("  written: %ld\n", written);
 	return (int)written;
@@ -606,7 +606,7 @@ AVFormatWriter::_Seek(void* cookie, off_t offset, int whence)
 
 	AVFormatWriter* writer = reinterpret_cast<AVFormatWriter*>(cookie);
 
-	BMediaIO* mediaIO = dynamic_cast<BMediaIO*>(writer->fTarget);
+	BMediaIO* mediaIO = dynamic_cast<BMediaIO*>(writer->Target());
 	if (mediaIO == NULL)
 		return -1;