diff --git a/ChangeLog b/ChangeLog
index 239f7e503f..db3359f85e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -7,6 +7,8 @@ Sun Jun  1 21:50:01 2003  WATANABE Hirofumi  <eban@ruby-lang.org>
 
 	* cygwin/GNUmakefile.in: ditto.
 
+	* ext/digest/defs.h: avoid warnings on Cygwin.
+
 Sun Jun 01 13:33:49 2003 Takaaki Uematsu <uema2x@jcom.home.ne.jp>
 
 	* wince/string_wce.c: add strpbrk() for hpcpro support.
diff --git a/ext/digest/defs.h b/ext/digest/defs.h
index 8e44cf6fa2..e7b90be023 100644
--- a/ext/digest/defs.h
+++ b/ext/digest/defs.h
@@ -18,7 +18,7 @@
 
 #if defined(HAVE_INTTYPES_H)
 # include <inttypes.h>
-#else
+#elif !defined __CYGWIN__
   typedef unsigned char uint8_t;
   typedef unsigned int  uint32_t;
 # if SIZEOF_LONG == 8