diff --git a/test/io/event/selector/cancellable.rb b/test/io/event/selector/cancellable.rb
index 2dfa2bae..9ffc65cc 100644
--- a/test/io/event/selector/cancellable.rb
+++ b/test/io/event/selector/cancellable.rb
@@ -42,6 +42,8 @@ def after
 		end
 		
 		it "can cancel waits" do
+			skip "Not supported on Windows" if RUBY_PLATFORM =~ /mswin|mingw|cygwin/
+			
 			reader = Fiber.new do
 				buffer = IO::Buffer.new(64)