diff --git a/make-mac.mk b/make-mac.mk
index 0b81c7fea..ce4e680c9 100644
--- a/make-mac.mk
+++ b/make-mac.mk
@@ -112,7 +112,7 @@ one:	$(CORE_OBJS) $(ONE_OBJS) one.o mac-agent
 zerotier-one: one
 
 central-controller:
-	make ZT_CONTROLLER=1 one
+	make ARCH_FLAGS="-arch x86_64" ZT_CONTROLLER=1 one
 
 zerotier-idtool: one