diff --git a/src/calibre/ebooks/oeb/display/extract.coffee b/src/calibre/ebooks/oeb/display/extract.coffee
index 8d3091c261..7df5c2d458 100644
--- a/src/calibre/ebooks/oeb/display/extract.coffee
+++ b/src/calibre/ebooks/oeb/display/extract.coffee
@@ -63,6 +63,8 @@ is_footnote_link = (node, url, linked_to_anchors) ->
     [x, num] = [node, 3]
     while x and num > 0
         style = window.getComputedStyle(x)
+        if not style.display not in ['inline', 'inline-block']
+            break
         if style.verticalAlign in ['sub', 'super', 'top', 'bottom']
             return true
         x = x.parentNode
@@ -72,7 +74,7 @@ is_footnote_link = (node, url, linked_to_anchors) ->
     children = (x for x in node.childNodes when x.nodeType == Node.ELEMENT_NODE)
     if children.length == 1
         style = window.getComputedStyle(children[0])
-        if style.verticalAlign in ['sub', 'super', 'top', 'bottom']
+        if style.display in ['inline', 'inline-block'] and style.verticalAlign in ['sub', 'super', 'top', 'bottom']
             return true
 
     eid = node.getAttribute('id') or node.getAttribute('name')