diff --git a/src/calibre/ebooks/mobi/reader/mobi6.py b/src/calibre/ebooks/mobi/reader/mobi6.py
index 27f2cdaf8b..24962fc858 100644
--- a/src/calibre/ebooks/mobi/reader/mobi6.py
+++ b/src/calibre/ebooks/mobi/reader/mobi6.py
@@ -524,8 +524,8 @@ class MobiReader(object):
                     attrib['href'] = "#filepos%d" % int(filepos)
                 except ValueError:
                     pass
-            if (tag.tag == 'a' and attrib.get('id', '').startswith('filepos')
-                    and not tag.text and len(tag) == 0 and (tag.tail is None or not
+            if (tag.tag == 'a' and attrib.get('id', '').startswith('filepos') and
+                    not tag.text and len(tag) == 0 and (tag.tail is None or not
                         tag.tail.strip()) and getattr(tag.getnext(), 'tag',
                             None) in BLOCK_TAGS):
                 # This is an empty anchor immediately before a block tag, move