diff --git a/its.py b/its.py
index 92119e8..440fb98 100644
--- a/its.py
+++ b/its.py
@@ -75,7 +75,7 @@ linux = ('linux' in str(sys.platform).lower())
 osx = ('darwin' in str(sys.platform).lower())
 hpux = ('hpux' in str(sys.platform).lower())   # Complete guess.
 solaris = ('sunos' in str(sys.platform).lower())
-
+cygwin = ('cygwin' in str(sys.platform).lower())
 
 # ---------
 # Bitness