diff --git a/clang/test/lit.cfg b/clang/test/lit.cfg
index 1180f72f5bfe..1a4fcbdec79b 100644
--- a/clang/test/lit.cfg
+++ b/clang/test/lit.cfg
@@ -238,7 +238,7 @@ if is_filesystem_case_insensitive():
     config.available_features.add('case-insensitive-filesystem')
 
 # Tests that require the /dev/fd filesystem.
-if os.path.exists("/dev/fd/0"):
+if os.path.exists("/dev/fd/0") and sys.platform not in ['cygwin']:
     config.available_features.add('dev-fd-fs')
 
 # [PR8833] LLP64-incompatible tests