diff --git a/lib/decoder.f90 b/lib/decoder.f90
index 24d00d1e7..9c8401aac 100644
--- a/lib/decoder.f90
+++ b/lib/decoder.f90
@@ -106,7 +106,7 @@ subroutine decoder(ntrSeconds,ndepth,nRxLog,c00)
      call decode9(i1SoftSymbols,limit,nlim,msg)
      call timer('decode9 ',1)
  
-     sync=ccfred(i) - 2.0
+     sync=(ccfred(i)-1.0)/2.0
      if(sync.lt.0.0) sync=0.0
      nsync=sync
      if(nsync.gt.10) nsync=10
@@ -125,7 +125,7 @@ subroutine decoder(ntrSeconds,ndepth,nRxLog,c00)
         fgood=f
         nsynced=1
         ndecoded=1
-        ccfred(max(ia,i):min(ib,i+8))=0.
+        ccfred(max(ia,i-3):min(ib,i+11))=0.
      endif
   endif
   ccfred(i)=0.
diff --git a/mainwindow.cpp b/mainwindow.cpp
index a4f116dcc..251d928c2 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -1,4 +1,4 @@
-//--------------------------------------------------------------- MainWindow
+//-------------------------------------------------------------- MainWindow
 #include "mainwindow.h"
 #include "ui_mainwindow.h"
 #include "devsetup.h"