diff --git a/tools/gn b/tools/gn
index a6df196bd2c70..1b39ea7e2fce0 100755
--- a/tools/gn
+++ b/tools/gn
@@ -769,6 +769,7 @@ def to_gn_args(args):
 
   if args.target_os == 'fuchsia':
     gn_args['gn_configs_path'] = '//flutter/build/config/fuchsia/gn_configs.gni'
+    gn_args['fuchsia_gn_sdk'] = '//flutter/tools/fuchsia/gn-sdk'
   if args.fuchsia_target_api_level is not None:
     gn_args['fuchsia_target_api_level'] = args.fuchsia_target_api_level
   elif args.target_os == 'fuchsia':