diff --git a/Android.bp b/Android.bp
index bf9ab36f4a920b3d1445d4b5a4da4be32f483cb3..6dd91e84635498db249dff4153ebb4ae1c47578e 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1,5 +1,7 @@
 // This file is generated by cargo_embargo.
-// Do not modify this file as changes will be overridden on upgrade.
+// Do not modify this file after the first "rust_*" or "genrule" module
+// because the changes will be overridden on upgrade.
+// Content before the first "rust_*" or "genrule" module is preserved.
 
 package {
     default_applicable_licenses: ["external_rust_crates_ciborium-io_license"],