diff --git a/apex/Android.bp b/apex/Android.bp
index de51907..784e3a8 100644
--- a/apex/Android.bp
+++ b/apex/Android.bp
@@ -105,6 +105,8 @@
     impl_library_visibility: [":__package__"],
     stubs_source_visibility: ["//visibility:private"],
 
+    defaults_visibility: ["//visibility:private"],
+
     // Collates API usages from each module for further analysis.
     plugins: ["java_api_finder"],