diff --git a/arm7/Makefile b/arm7/Makefile
index 9d696a8..c5b4c57 100644
--- a/arm7/Makefile
+++ b/arm7/Makefile
@@ -24,7 +24,7 @@ DATA		:=
 #---------------------------------------------------------------------------------
 ARCH	:=	-marm	-mthumb-interwork
 
-CFLAGS	:=	-Wall -O2 \
+CFLAGS	:=	-Wall -O3 \
 		-mcpu=arm7tdmi -mtune=arm7tdmi -fomit-frame-pointer\
 		-ffast-math \
 		$(ARCH)
diff --git a/arm9/Makefile b/arm9/Makefile
index 8188170..38fb31a 100644
--- a/arm9/Makefile
+++ b/arm9/Makefile
@@ -25,7 +25,7 @@ DATA		:=
 #---------------------------------------------------------------------------------
 ARCH	:=	-marm -mthumb-interwork
 
-CFLAGS	:=	-Wall -O2 -DNO_VIZ\
+CFLAGS	:=	-Wall -O3 -DNO_VIZ\
  			-march=armv5te -mtune=arm946e-s -fomit-frame-pointer\
 			-ffast-math \
 			$(ARCH)