diff --git a/mainwindow.cpp b/mainwindow.cpp
index de71d08ec..0c85fe590 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -1,4 +1,4 @@
-//------------------------------------------------------------ MainWindow
+//------------------------------------------------------------- MainWindow
 #include "mainwindow.h"
 #include "ui_mainwindow.h"
 #include "devsetup.h"
diff --git a/soundout.cpp b/soundout.cpp
index d394505e1..1fdf70a3f 100644
--- a/soundout.cpp
+++ b/soundout.cpp
@@ -29,7 +29,7 @@ extern "C" int d2aCallback(const void *inputBuffer, void *outputBuffer,
   paUserData *udata=(paUserData*)userData;
   short *wptr = (short*)outputBuffer;
 
-  static double twopi=6.283185307;
+  static double twopi=2.0*3.141592653589793238462;
   static double baud=12000.0/udata->nsps;
   static double phi=0.0;
   static double dphi;