diff --git a/src/calibre/devices/prs505/books.py b/src/calibre/devices/prs505/books.py
index c10263c6e0..6e268e734a 100644
--- a/src/calibre/devices/prs505/books.py
+++ b/src/calibre/devices/prs505/books.py
@@ -403,9 +403,8 @@ def fix_ids(main, carda, cardb):
         for child in db.root_element.childNodes:
             if child.nodeType == child.ELEMENT_NODE and child.hasAttribute('id'):
                 id_map[child.getAttribute('id')] = str(cid)
-                child.setAttribute('sourceid', '1')
-                #child.setAttribute("sourceid",
-                #    '0' if getattr(child, 'tagName', '').endswith('playlist') else '1')
+                child.setAttribute("sourceid",
+                    '0' if getattr(child, 'tagName', '').endswith('playlist') else '1')
                 child.setAttribute('id', str(cid))
                 cid += 1