diff --git a/t/test-lib.sh b/t/test-lib.sh
index ca6bdef63d2ee9389729e5118f22461c887dc5ed..e74bc224b31bea7919b7e1762924534c0bf24eaa 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -737,7 +737,14 @@ test_i18ngrep () {
 
 test_lazy_prereq PIPE '
 	# test whether the filesystem supports FIFOs
-	rm -f testfifo && mkfifo testfifo
+	case $(uname -s) in
+	CYGWIN*)
+		false
+		;;
+	*)
+		rm -f testfifo && mkfifo testfifo
+		;;
+	esac
 '
 
 test_lazy_prereq SYMLINKS '