diff --git a/src/pyj/read_book/footnotes.pyj b/src/pyj/read_book/footnotes.pyj
index 9a48ca783e..7c14bad2b3 100644
--- a/src/pyj/read_book/footnotes.pyj
+++ b/src/pyj/read_book/footnotes.pyj
@@ -160,7 +160,7 @@ def show_footnote(target, known_anchors):
     else:
         # Try to detect natural boundaries based on markup for this note
         found_note_start = False
-        for elem in document.body.getElementsByTagName('*'):
+        for elem in document.documentElement.getElementsByTagName('*'):
             if found_note_start:
                 eid = elem.getAttribute('id')
                 if eid is not target and known_anchors[eid] and get_note_container(elem) is not start_elem: