diff --git a/PseudoTTYController.cpp b/PseudoTTYController.cpp
index 67df4a4..52a4ac9 100644
--- a/PseudoTTYController.cpp
+++ b/PseudoTTYController.cpp
@@ -37,7 +37,7 @@
 
 
 CPseudoTTYController::CPseudoTTYController(const std::string& symlink, unsigned int speed, bool assertRTS) :
-CSerialController("", speed, assertRTS),
+CSerialController(speed, assertRTS),
 m_symlink(symlink)
 {
 }
diff --git a/SerialController.cpp b/SerialController.cpp
index 10c634a..99fe576 100644
--- a/SerialController.cpp
+++ b/SerialController.cpp
@@ -48,6 +48,14 @@ m_handle(INVALID_HANDLE_VALUE)
 	assert(!device.empty());
 }
 
+CSerialController::CSerialController(unsigned int speed, bool assertRTS) :
+m_device(),
+m_speed(speed),
+m_assertRTS(assertRTS),
+m_handle(INVALID_HANDLE_VALUE)
+{
+}
+
 CSerialController::~CSerialController()
 {
 }
@@ -229,6 +237,14 @@ m_fd(-1)
 	assert(!device.empty());
 }
 
+CSerialController::CSerialController(unsigned int speed, bool assertRTS) :
+m_device(),
+m_speed(speed),
+m_assertRTS(assertRTS),
+m_fd(-1)
+{
+}
+
 CSerialController::~CSerialController()
 {
 }
diff --git a/SerialController.h b/SerialController.h
index d4cb519..e4adb7d 100644
--- a/SerialController.h
+++ b/SerialController.h
@@ -46,6 +46,8 @@ public:
 #endif
 
 protected:
+	CSerialController(unsigned int speed, bool assertRTS = false);
+
 	std::string    m_device;
 	unsigned int   m_speed;
 	bool           m_assertRTS;
diff --git a/Version.h b/Version.h
index dc5e793..d3f9fbf 100644
--- a/Version.h
+++ b/Version.h
@@ -19,6 +19,6 @@
 #if !defined(VERSION_H)
 #define	VERSION_H
 
-const char* VERSION = "20200627";
+const char* VERSION = "20200628";
 
 #endif