diff --git a/src/pyj/read_book/flow_mode.pyj b/src/pyj/read_book/flow_mode.pyj
index ee85514ef0..f5860b3e9f 100644
--- a/src/pyj/read_book/flow_mode.pyj
+++ b/src/pyj/read_book/flow_mode.pyj
@@ -83,8 +83,17 @@ def _check_for_scroll_end(func, obj, args, report):
 
     if scroll_viewport.block_pos() is before:
         csi = current_spine_item()
+        ## ignore duplicate requests
         if last_change_spine_item_request.name is csi.name and now - last_change_spine_item_request.at < 2000:
             return False
+        ## delay change on boundaries
+        if opts.scroll_stop_boundaries :
+            if last_change_spine_item_request.ignoreUntil is None :
+                last_change_spine_item_request.ignoreUntil = now + 500
+            if now < last_change_spine_item_request.ignoreUntil:
+                return False
+            last_change_spine_item_request.ignoreUntil = None
+        # perform change
         last_change_spine_item_request.name = csi.name
         last_change_spine_item_request.at = now
         go_to_previous_page = args[0] < 0
@@ -92,6 +101,7 @@ def _check_for_scroll_end(func, obj, args, report):
             go_to_previous_page = not go_to_previous_page
         get_boss().send_message('next_spine_item', previous=go_to_previous_page)
         return False
+    last_change_spine_item_request.ignoreUntil = None
     if report:
         report_human_scroll(scroll_viewport.block_pos() - before)
     return True