diff --git a/frontend/apps/reader/modules/readerbookmark.lua b/frontend/apps/reader/modules/readerbookmark.lua
index 834794c61..a6246bbb8 100644
--- a/frontend/apps/reader/modules/readerbookmark.lua
+++ b/frontend/apps/reader/modules/readerbookmark.lua
@@ -643,7 +643,8 @@ function ReaderBookmark:onShowBookmark()
     end
     local curr_page_datetime
     if self.sorting_mode == "date" then
-        curr_page_datetime = item_table[curr_page_index_filtered].datetime
+        local idx = math.max(1, math.min(curr_page_index_filtered, #item_table))
+        curr_page_datetime = item_table[idx].datetime
         local sort_func = self.is_reverse_sorting and function(a, b) return a.datetime > b.datetime end
                                                    or function(a, b) return a.datetime < b.datetime end
         table.sort(item_table, sort_func)