diff --git a/static/js/navigate.js b/static/js/navigate.js
index 527f558543..71fe2e2f1e 100644
--- a/static/js/navigate.js
+++ b/static/js/navigate.js
@@ -27,9 +27,7 @@ export function down(with_centering) {
             message_viewport.scrollTop(
                 current_msg_table.safeOuterHeight(true) - message_viewport.height() * 0.1,
             );
-            if (message_lists.current.can_mark_messages_read()) {
-                unread_ops.mark_current_list_as_read();
-            }
+            unread_ops.process_scrolled_to_bottom();
         }
 
         return;
@@ -53,9 +51,7 @@ export function to_end() {
     const next_id = message_lists.current.last().id;
     message_viewport.set_last_movement_direction(1);
     message_lists.current.select_id(next_id, {then_scroll: true, from_scroll: true});
-    if (message_lists.current.can_mark_messages_read()) {
-        unread_ops.mark_current_list_as_read();
-    }
+    unread_ops.process_scrolled_to_bottom();
 }
 
 function amount_to_paginate() {
@@ -115,9 +111,7 @@ export function page_up() {
 export function page_down() {
     if (message_viewport.at_bottom() && !message_lists.current.empty()) {
         message_lists.current.select_id(message_lists.current.last().id, {then_scroll: false});
-        if (message_lists.current.can_mark_messages_read()) {
-            unread_ops.mark_current_list_as_read();
-        }
+        unread_ops.process_scrolled_to_bottom();
     } else {
         page_down_the_right_amount();
     }
diff --git a/static/js/unread_ops.js b/static/js/unread_ops.js
index 84aa686f1b..34fb634e63 100644
--- a/static/js/unread_ops.js
+++ b/static/js/unread_ops.js
@@ -99,15 +99,17 @@ export function notify_server_message_read(message, options) {
     notify_server_messages_read([message], options);
 }
 
+export function process_scrolled_to_bottom() {
+    if (message_lists.current.can_mark_messages_read()) {
+        mark_current_list_as_read();
+    }
+}
+
 // If we ever materially change the algorithm for this function, we
 // may need to update notifications.received_messages as well.
 export function process_visible() {
-    if (
-        message_viewport.is_visible_and_focused() &&
-        message_viewport.bottom_message_visible() &&
-        message_lists.current.can_mark_messages_read()
-    ) {
-        mark_current_list_as_read();
+    if (message_viewport.is_visible_and_focused() && message_viewport.bottom_message_visible()) {
+        process_scrolled_to_bottom();
     }
 }