diff --git a/Modulator.cpp b/Modulator.cpp
index 67a77049d..88f24f2f9 100644
--- a/Modulator.cpp
+++ b/Modulator.cpp
@@ -86,7 +86,7 @@ void Modulator::start (unsigned symbolsLength, double framesPerSymbol,
   if (synchronize && !m_tuning && !m_bFastMode)	{
     m_silentFrames = m_ic + m_frameRate - (mstr * m_frameRate / 1000);
   }
-  if(m_ic==0 and (m_silentFrames/48000.0 > 0.6) and m_nsps==2048 and m_period==15) {
+  if(m_ic==0 and (m_silentFrames/48000.0 > 0.6) and m_nsps==1920 and m_period==15) {
     // FT8 mode: Start audio at t=0.5 s rather than t=1.0 s.
     m_silentFrames=m_silentFrames-24000;
   }
diff --git a/plotter.cpp b/plotter.cpp
index d0a044297..e9c755012 100644
--- a/plotter.cpp
+++ b/plotter.cpp
@@ -361,7 +361,7 @@ void CPlotter::DrawOverlay()                   //DrawOverlay()
 
   float bw=9.0*12000.0/m_nsps;               //JT9
 
-  if(m_mode=="FT8") bw=8*12000.0/2048.0;     //FT8
+  if(m_mode=="FT8") bw=8*12000.0/1920.0;     //FT8
 
   if(m_mode=="JT4") {                        //JT4
     bw=3*11025.0/2520.0;                     //Max tone spacing (3/4 of actual BW)