diff --git a/scrapy/linkextractors/lxmlhtml.py b/scrapy/linkextractors/lxmlhtml.py
index 14eb24862..8a4175d49 100644
--- a/scrapy/linkextractors/lxmlhtml.py
+++ b/scrapy/linkextractors/lxmlhtml.py
@@ -195,7 +195,8 @@ class LxmlLinkExtractor:
         Only links that match the settings passed to the ``__init__`` method of
         the link extractor are returned.
 
-        Duplicate links are omitted.
+        Duplicate links are omitted if the ``unique`` parameter is set to ``True``, 
+        otherwise they are returned.
         """
         base_url = get_base_url(response)
         if self.restrict_xpaths: