diff --git a/Makefile b/Makefile
index 2da3941..2e4a6ae 100644
--- a/Makefile
+++ b/Makefile
@@ -30,7 +30,7 @@ INCLUDES	:=	src
 #-------------------------------------------------------------------------------
 # options for code generation
 #-------------------------------------------------------------------------------
-CFLAGS	:=	-Wall -O0 -ffunction-sections \
+CFLAGS	:=	-Wall -Os -ffunction-sections \
 			$(MACHDEP)
 
 CFLAGS	+=	$(INCLUDE) -D__WIIU__ -D__WUT__ -D__WUPS__