1 files changed, 1 insertions, 1 deletions
diff --git a/lufa.mk b/lufa.mk
index a2c7eb9..277fa36 100644
--- a/lufa.mk
+++ b/lufa.mk
@@ -27,7 +27,7 @@ include $(LUFA_PATH)/LUFA/makefile
 SRC = $(LUFA_SRC_USB) $(LUFA_SRC_USBCLASS)
 
 CFLAGS += -DF_USB=$(F_USB)UL
-CFLAGS += -DBOARD=BOARD_$(LUFA_BOARD) -DARCH=ARCH_$(ARCH)
+CFLAGS += -DBOARD=BOARD_$(LUFA_BOARD)
 CFLAGS += $(LUFA_OPTS)
 
 OBJ = $(SRC:%.c=%.o)