1 files changed, 1 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index 4aad448..b362dbe 100644
--- a/Makefile
+++ b/Makefile
@@ -17,7 +17,7 @@ VPATH=$(SRCDIR)
 
 CFLAGS ?= -g
 
-ALL_CFLAGS = -Wall -D_GNU_SOURCE -DARCH=$(ARCH) $(BUILD_INC) $(CFLAGS) $(EXTRA_CFLAGS)
+ALL_CFLAGS = -Wall -D_GNU_SOURCE -DARCH=$(ARCH) -U$(ARCH) $(BUILD_INC) $(CFLAGS) $(EXTRA_CFLAGS)
 
 PROG=risu
 SRCS=risu.c comms.c reginfo.c risu_$(ARCH).c risu_reginfo_$(ARCH).c