diff --git a/static/js/feature_flags.js b/static/js/feature_flags.js
index a14271083e..3b9923dda0 100644
--- a/static/js/feature_flags.js
+++ b/static/js/feature_flags.js
@@ -47,8 +47,8 @@ exports.use_socket = page_params.staging;
 
 // Still burning in...
 exports.mark_read_at_bottom = true;
-exports.summarize_read_while_narrowed = true;
 exports.propagate_topic_edits = true;
+exports.summarize_read_while_narrowed = false;
 
 // Ready for deprecation.
 exports.collapsible = false;