diff --git a/africat/aa_create_dataset.py b/africat/aa_create_dataset.py
index dcaf528..6bf7ee2 100755
--- a/africat/aa_create_dataset.py
+++ b/africat/aa_create_dataset.py
@@ -96,6 +96,8 @@ def parse_and_extract(input_dir, verbose):
 
           cats = list()
           for cat in doc.findall('./category'):
+            # TODO check against a list of current categories,
+            # and strip any non-current categories
             cats.append(cat.text)
           #entry["categories"] = cats          # if you want a list
           entry["categories"] = ";".join(cats) # if you want a string