diff --git a/serial/serialposix.py b/serial/serialposix.py
index 249dae6..b71df8d 100644
--- a/serial/serialposix.py
+++ b/serial/serialposix.py
@@ -13,6 +13,7 @@
 # references: http://www.easysw.com/~mike/serial/serial.html
 
 import sys, os, fcntl, termios, struct, select, errno, time
+import io
 from serial.serialutil import *
 
 # Do check the Python version as some constants have moved.
@@ -273,7 +274,7 @@
 CMSPAR = 0o10000000000 # Use "stick" (mark/space) parity
 
 
-class PosixSerial(SerialBase):
+class Serial(SerialBase, io.RawIOBase):
     """\
     Serial port class POSIX implementation. Serial port configuration is 
     done with termios and fcntl. Runs on Linux and many other Un*x like
@@ -663,19 +664,6 @@
             termios.tcflow(self.fd, TERMIOS.TCOOFF)
 
 
-# assemble Serial class with the platform specific implementation and the base
-# for file-like behavior. for Python 2.6 and newer, that provide the new I/O
-# library, derive from io.RawIOBase
-try:
-    import io
-except ImportError:
-    # classic version with our own file-like emulation
-    class Serial(PosixSerial, FileLike):
-        pass
-else:
-    # io library present
-    class Serial(PosixSerial, io.RawIOBase):
-        pass
 
 class PosixPollSerial(Serial):
     """\
diff --git a/serial/serialwin32.py b/serial/serialwin32.py
index 785f6d4..e50cae7 100644
--- a/serial/serialwin32.py
+++ b/serial/serialwin32.py
@@ -9,6 +9,7 @@
 # Initial patch to use ctypes by Giovanni Bajo <rasky@develer.com>
 
 import ctypes
+import io
 from serial import win32
 
 from serial.serialutil import *
@@ -19,7 +20,7 @@
     return 'COM%d' % (portnum+1) # numbers are transformed to a string
 
 
-class Win32Serial(SerialBase):
+class Serial(SerialBase, io.RawIOBase):
     """Serial port implementation for Win32 based on ctypes."""
 
     BAUDRATES = (50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
@@ -438,21 +439,7 @@
     rtsToggle = property(getRtsToggle, setRtsToggle, doc="RTS toggle control setting")
 
 
-# assemble Serial class with the platform specific implementation and the base
-# for file-like behavior. for Python 2.6 and newer, that provide the new I/O
-# library, derive from io.RawIOBase
-try:
-    import io
-except ImportError:
-    # classic version with our own file-like emulation
-    class Serial(Win32Serial, FileLike):
-        pass
-else:
-    # io library present
-    class Serial(Win32Serial, io.RawIOBase):
-        pass
-
-
+t
 # Nur Testfunktion!!
 if __name__ == '__main__':
     s = Serial(0)