diff --git a/adapter/preview/build/config.gni b/adapter/preview/build/config.gni
index 15963b9c..4c4415d9 100644
--- a/adapter/preview/build/config.gni
+++ b/adapter/preview/build/config.gni
@@ -15,4 +15,4 @@
 use_mingw_win = "${current_os}_${current_cpu}" == "mingw_x86_64"
 
 # source code for mac.
-use_mac = "${host_os}_${host_cpu}" == "mac_x64"
+use_mac = "${current_os}_${current_cpu}" == "mac_x64"