diff --git a/newlib/libc/include/sys/cdefs.h b/newlib/libc/include/sys/cdefs.h
index 2a55a92e9..f569fc4d0 100644
--- a/newlib/libc/include/sys/cdefs.h
+++ b/newlib/libc/include/sys/cdefs.h
@@ -466,8 +466,13 @@
 #if __GNUC_PREREQ__(4, 0)
 #define	__sentinel	__attribute__((__sentinel__))
 #define	__exported	__attribute__((__visibility__("default")))
+/* Only default visibility is supported on PE/COFF targets. */
+#ifndef __CYGWIN__
 #define	__hidden	__attribute__((__visibility__("hidden")))
 #else
+#define	__hidden
+#endif
+#else
 #define	__sentinel
 #define	__exported
 #define	__hidden