2 files changed, 3 insertions, 6 deletions
diff --git a/src/serialport/qserialport.cpp b/src/serialport/qserialport.cpp
index cb87689..99ad993 100644
--- a/src/serialport/qserialport.cpp
+++ b/src/serialport/qserialport.cpp
@@ -46,7 +46,7 @@ QT_BEGIN_NAMESPACE
 
 QSerialPortPrivate::QSerialPortPrivate()
     : readBufferMaxSize(0)
-    , writeBuffer(SERIALPORT_BUFFERSIZE)
+    , writeBuffer(InitialBufferSize)
     , error(QSerialPort::NoError)
     , inputBaudRate(9600)
     , outputBaudRate(9600)
diff --git a/src/serialport/qserialport_p.h b/src/serialport/qserialport_p.h
index 3da5b59..60f9ee1 100644
--- a/src/serialport/qserialport_p.h
+++ b/src/serialport/qserialport_p.h
@@ -97,10 +97,6 @@ struct serial_struct {
 
 QT_BEGIN_NAMESPACE
 
-#ifndef SERIALPORT_BUFFERSIZE
-#  define SERIALPORT_BUFFERSIZE 16384
-#endif
-
 class QThread;
 class QWinOverlappedIoNotifier;
 class QTimer;
@@ -115,7 +111,8 @@ class QSerialPortPrivate : public QIODevicePrivate
     Q_DECLARE_PUBLIC(QSerialPort)
 public:
     enum IoConstants {
-        ReadChunkSize = 512
+        ReadChunkSize = 512,
+        InitialBufferSize = 16384
     };
 
     QSerialPortPrivate();