diff --git a/core/java/android/tracing/flags.aconfig b/core/java/android/tracing/flags.aconfig
index c6e8844..b1bca96 100644
--- a/core/java/android/tracing/flags.aconfig
+++ b/core/java/android/tracing/flags.aconfig
@@ -12,4 +12,5 @@
     namespace: "windowing_tools"
     description: "Migrate protolog to Perfetto"
     bug: "276432490"
+    is_fixed_read_only: true
 }