diff --git a/sdrbase/dsp/filerecord.h b/sdrbase/dsp/filerecord.h
index ac793e15e..69490e0a5 100644
--- a/sdrbase/dsp/filerecord.h
+++ b/sdrbase/dsp/filerecord.h
@@ -50,15 +50,16 @@ public:
 
     quint64 getByteCount() const { return m_byteCount; }
 
-    virtual void setFileName(const QString& filename);
-
 	virtual void feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end, bool positiveOnly);
 	virtual void start();
 	virtual void stop();
 	virtual bool handleMessage(const Message& message);
+
+    virtual void setFileName(const QString& filename);
     virtual void startRecording();
     virtual void stopRecording();
-    bool isRecording() const { return m_recordOn; }
+    virtual bool isRecording() const { return m_recordOn; }
+
     static bool readHeader(std::ifstream& samplefile, Header& header); //!< returns true if CRC checksum is correct else false
     static void writeHeader(std::ofstream& samplefile, Header& header);
 
diff --git a/sdrbase/dsp/filerecordinterface.h b/sdrbase/dsp/filerecordinterface.h
index 39146e94e..6762c420f 100644
--- a/sdrbase/dsp/filerecordinterface.h
+++ b/sdrbase/dsp/filerecordinterface.h
@@ -29,6 +29,7 @@ public:
     virtual void setFileName(const QString &filename) = 0;
     virtual void startRecording() = 0;
     virtual void stopRecording() = 0;
+    virtual bool isRecording() const = 0;
     static QString genUniqueFileName(unsigned int deviceUID, int istream = -1);
 };