diff --git a/BUILD.gn b/BUILD.gn
index 234308a..204f223 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -125,6 +125,7 @@ ohos_shared_library("iowow") {
     "src/utils/utf8proc.c",
   ]
 
+  innerapi_tags = [ "platformsdk" ]
   part_name = "iowow"
   subsystem_name = "thirdparty"
 }