diff --git a/build_tools/make_buildopts_h b/build_tools/make_buildopts_h
index e7c7e0fd28..3c09a661c2 100755
--- a/build_tools/make_buildopts_h
+++ b/build_tools/make_buildopts_h
@@ -23,7 +23,7 @@ then
 fi
 
 case ${OSARCH} in	# actually we should check build_os
-*BSD|mingw*)
+*BSD|mingw|darwin*)
 	BUILDSUM=`echo ${TMP} | md5`
 	echo "#define AST_BUILDOPT_SUM {0x0, 0x0, 0x0, 0x0} /* dummy */"
 	;;