diff --git a/newlib/libc/include/sys/_types.h b/newlib/libc/include/sys/_types.h
index 1c08d9fed..355603d5e 100644
--- a/newlib/libc/include/sys/_types.h
+++ b/newlib/libc/include/sys/_types.h
@@ -151,6 +151,8 @@ typedef long _ssize_t;
 #endif
 #endif
 
+typedef _ssize_t __ssize_t;
+
 #define __need_wint_t
 #include <stddef.h>