diff --git a/Makefile b/Makefile
index 0671796..f93366a 100644
--- a/Makefile
+++ b/Makefile
@@ -59,7 +59,7 @@ endif
 
 else ifeq ($(shell uname),Darwin)
 
-OBJARCH += -O mach-o-x86-64 -B i386:x86-64
+OBJARCH += -O mach-o-x86-64
 
 else # assume Windows