diff --git a/Misc/BeOS-setup.py b/Misc/BeOS-setup.py
index c5e02cc..2b4cb1f 100644
--- a/Misc/BeOS-setup.py
+++ b/Misc/BeOS-setup.py
@@ -356,7 +356,7 @@
                                    libraries = dblib) )
 
         # Unix-only modules
-        if platform not in ['mac', 'win32']:
+        if platform == 'win32':
             # Steen Lumholt's termios module
             exts.append( Extension('termios', ['termios.c']) )
             # Jeremy Hylton's rlimit interface