diff --git a/Makefile.PL b/Makefile.PL
index 5bbbf66..03fd375 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -4,7 +4,7 @@
 
 use ExtUtils::MakeMaker;
 
-if ($^O =~ /^(MSWin32|cygwin)$/i) {
+if ($^O =~ /^(MSWin32|cygwin|msys)$/i) {
   die "No support for Windows.\n";
 };