diff --git a/arm9/Makefile b/arm9/Makefile
index 3cc75e7..f180deb 100644
--- a/arm9/Makefile
+++ b/arm9/Makefile
@@ -10,8 +10,8 @@ INCDIRS := source source/common source/filesys source/crypto source/fatfs source
 INCLUDE := $(foreach dir,$(INCDIRS),-I"$(shell pwd)/$(dir)")
 
 ASFLAGS += $(SUBARCH) $(INCLUDE)
-CFLAGS  += $(SUBARCH) $(INCLUDE) -fno-builtin-memcpy
-LDFLAGS += $(SUBARCH) -Wl,-Map,$(TARGET).map
+CFLAGS  += $(SUBARCH) $(INCLUDE) -fno-builtin-memcpy -flto
+LDFLAGS += $(SUBARCH) -Wl,-Map,$(TARGET).map -flto
 
 include ../Makefile.common