diff --git a/arm9/Makefile b/arm9/Makefile
index 7110017..fa10bc2 100644
--- a/arm9/Makefile
+++ b/arm9/Makefile
@@ -30,12 +30,12 @@ CFLAGS	:=	-g -Wall -O2\
 			-ffast-math \
 			$(ARCH)
 
-CFLAGS	+=	$(INCLUDE) -DARM9
+CFLAGS	+=	$(INCLUDE) -DARM9 -flto
 CXXFLAGS	:=	$(CFLAGS) -fno-rtti -fno-exceptions -std=gnu++23
 
 ASFLAGS	:=	-g $(ARCH) -march=armv5te -mtune=arm946e-s
 
-LDFLAGS	=	-specs=ds_arm9.specs -g $(ARCH) -Wl,-Map,$(notdir $*.map)
+LDFLAGS	=	-specs=ds_arm9.specs -g $(ARCH) -Wl,-Map,$(notdir $*.map) -flto
 
 #---------------------------------------------------------------------------------
 # any extra libraries we wish to link with the project