diff --git a/plugins/channeltx/modam/ammod.h b/plugins/channeltx/modam/ammod.h
index 40d65795e..d5ac23c9f 100644
--- a/plugins/channeltx/modam/ammod.h
+++ b/plugins/channeltx/modam/ammod.h
@@ -24,6 +24,7 @@
 
 #include "dsp/basebandsamplesource.h"
 #include "dsp/nco.h"
+#include "dsp/ncof.h"
 #include "dsp/interpolator.h"
 #include "dsp/movingaverage.h"
 #include "dsp/agc.h"
@@ -282,7 +283,7 @@ private:
     Config m_running;
 
     NCO m_carrierNco;
-    NCO m_toneNco;
+    NCOF m_toneNco;
     Complex m_modSample;
     Interpolator m_interpolator;
     Real m_interpolatorDistance;
diff --git a/plugins/channeltx/modwfm/wfmmod.h b/plugins/channeltx/modwfm/wfmmod.h
index 47282bd95..a8fc61181 100644
--- a/plugins/channeltx/modwfm/wfmmod.h
+++ b/plugins/channeltx/modwfm/wfmmod.h
@@ -24,6 +24,7 @@
 
 #include "dsp/basebandsamplesource.h"
 #include "dsp/nco.h"
+#include "dsp/ncof.h"
 #include "dsp/interpolator.h"
 #include "dsp/fftfilt.h"
 #include "dsp/movingaverage.h"
@@ -289,7 +290,7 @@ private:
     Config m_running;
 
     NCO m_carrierNco;
-    NCO m_toneNco;
+    NCOF m_toneNco;
     float m_modPhasor; //!< baseband modulator phasor
     Complex m_modSample;
     Interpolator m_interpolator;