diff --git a/poky/bitbake/lib/layerindexlib/cooker.py b/poky/bitbake/lib/layerindexlib/cooker.py
index 604a961..65b23d0 100644
--- a/poky/bitbake/lib/layerindexlib/cooker.py
+++ b/poky/bitbake/lib/layerindexlib/cooker.py
@@ -4,9 +4,8 @@
 #
 
 import logging
-import json
 
-from collections import OrderedDict, defaultdict
+from collections import defaultdict
 
 from urllib.parse import unquote, urlparse
 
@@ -94,7 +93,7 @@
             return index
 
         collections = d.getVar('BBFILE_COLLECTIONS')
-        layerconfs = d.varhistory.get_variable_items_files('BBFILE_COLLECTIONS', d)
+        layerconfs = d.varhistory.get_variable_items_files('BBFILE_COLLECTIONS')
         bbfile_collections = {layer: os.path.dirname(os.path.dirname(path)) for layer, path in layerconfs.items()}
 
         (_, bb_branch, _, _) = self._get_bitbake_info()