diff --git a/manifest_xml.py b/manifest_xml.py
index 1207244..04cabaa 100644
--- a/manifest_xml.py
+++ b/manifest_xml.py
@@ -321,7 +321,8 @@
       raise ManifestParseError("no <manifest> in %s" % (path,))
 
     nodes = []
-    for node in manifest.childNodes:
+    for node in manifest.childNodes:  # pylint:disable-msg=W0631
+                                      # We only get here if manifest is initialised
         if node.nodeName == 'include':
             name = self._reqatt(node, 'name')
             fp = os.path.join(include_root, name)