diff --git a/Makefile.gc b/Makefile.gc
index 5b58ff7..7aa9708 100644
--- a/Makefile.gc
+++ b/Makefile.gc
@@ -28,7 +28,7 @@ INCLUDES	:=	source/snes9x source/ngc
 # options for code generation
 #---------------------------------------------------------------------------------
 
-CFLAGS	=	-g -O2 -Wall $(MACHDEP) $(INCLUDE) \
+CFLAGS	=	-g -O3 -Wall $(MACHDEP) $(INCLUDE) \
 			-DNGC \
 			-DNO_ASM -DRIGHTSHIFT_IS_SAR \
 			-DCPU_SHUTDOWN -DSPC700_SHUTDOWN \