diff --git a/qrtplib/rtperrors.h b/qrtplib/rtperrors.h
index ec12c7955..fba59d681 100644
--- a/qrtplib/rtperrors.h
+++ b/qrtplib/rtperrors.h
@@ -38,6 +38,7 @@
 
 #define RTPERRORS_H
 
+#include "export.h"
 #include "rtpconfig.h"
 #include <string>
 
@@ -45,7 +46,7 @@ namespace qrtplib
 {
 
 /** Returns a string describing the error code \c errcode. */
-std::string RTPGetErrorString(int errcode);
+QRTPLIB_API std::string RTPGetErrorString(int errcode);
 
 } // end namespace
 
diff --git a/sdrbase/dsp/dspcommands.cpp b/sdrbase/dsp/dspcommands.cpp
index 71ab79ca2..a6cc3765a 100644
--- a/sdrbase/dsp/dspcommands.cpp
+++ b/sdrbase/dsp/dspcommands.cpp
@@ -40,7 +40,6 @@ MESSAGE_CLASS_DEFINITION(DSPRemoveThreadedBasebandSampleSink, Message)
 MESSAGE_CLASS_DEFINITION(DSPRemoveThreadedBasebandSampleSource, Message)
 MESSAGE_CLASS_DEFINITION(DSPAddAudioSink, Message)
 MESSAGE_CLASS_DEFINITION(DSPRemoveAudioSink, Message)
-//MESSAGE_CLASS_DEFINITION(DSPConfigureSpectrumVis, Message)
 MESSAGE_CLASS_DEFINITION(DSPConfigureCorrection, Message)
 MESSAGE_CLASS_DEFINITION(DSPEngineReport, Message)
 MESSAGE_CLASS_DEFINITION(DSPConfigureScopeVis, Message)
diff --git a/sdrbase/dsp/dspcommands.h b/sdrbase/dsp/dspcommands.h
index ca1a5343b..3d66541e3 100644
--- a/sdrbase/dsp/dspcommands.h
+++ b/sdrbase/dsp/dspcommands.h
@@ -256,27 +256,6 @@ private:
 	AudioFifo* m_audioFifo;
 };
 
-class SDRBASE_API DSPConfigureSpectrumVis : public Message {
-	MESSAGE_CLASS_DECLARATION
-
-public:
-	DSPConfigureSpectrumVis(int fftSize, int overlapPercent, FFTWindow::Function window) :
-		Message(),
-		m_fftSize(fftSize),
-		m_overlapPercent(overlapPercent),
-		m_window(window)
-	{ }
-
-	int getFFTSize() const { return m_fftSize; }
-	int getOverlapPercent() const { return m_overlapPercent; }
-	FFTWindow::Function getWindow() const { return m_window; }
-
-private:
-	int m_fftSize;
-	int m_overlapPercent;
-	FFTWindow::Function m_window;
-};
-
 class SDRBASE_API DSPConfigureCorrection : public Message {
 	MESSAGE_CLASS_DECLARATION