diff --git a/services/backup/flags.aconfig b/services/backup/flags.aconfig
index d695d36..549fa36 100644
--- a/services/backup/flags.aconfig
+++ b/services/backup/flags.aconfig
@@ -7,4 +7,12 @@
             "restore for apps that have been launched."
     bug: "308401499"
     is_fixed_read_only: true
+}
+
+flag {
+    name: "enable_max_size_writes_to_pipes"
+    namespace: "onboarding"
+    description: "Enables the write buffer to pipes to be of maximum size."
+    bug: "265976737"
+    is_fixed_read_only: true
 }
\ No newline at end of file