--- src/gui/Makefile.orig	2008-04-27 10:56:55.000000000 +0900
+++ src/gui/Makefile	2008-04-27 10:57:17.000000000 +0900
@@ -42,7 +42,7 @@
 CFLAGS+=-Wall
 
 # Add some specific Windows compile options for Cygwin
-SYSTEM:=$(shell uname -o)
+SYSTEM:=$(shell uname -s)
 ifeq ($(SYSTEM), Cygwin)
 CFLAGS+=-mms-bitfields
 LDFLAGS+=-mwindows