diff --git a/checker/checker_options.h b/checker/checker_options.h
index cb85337fa..da6004d74 100644
--- a/checker/checker_options.h
+++ b/checker/checker_options.h
@@ -94,7 +94,7 @@ struct CheckerOptions {
   //
   // Temporary flag to allow rolling out the change. No functional changes to
   // evaluation behavior in either mode.
-  bool enable_function_name_in_reference = true;
+  bool enable_function_name_in_reference = false;
 
   // If true, the checker will use the proto json field names for protobuf
   // messages. Unlike protojson parsers, it will not accept the standard proto