diff --git a/libs/fingerprint_index.py b/libs/fingerprint_index.py
index c145ddc..4ad95f8 100644
--- a/libs/fingerprint_index.py
+++ b/libs/fingerprint_index.py
@@ -87,6 +87,10 @@ class FingerprintIndex:
         FROM md5_all
         WHERE md5_db=?
         ''', [md5_db])
+
+      for row in rows:
+        # normalize the data, go from tuple to array
+        # https://docs.python.org/2/library/sqlite3.html
       return rows
     except Exception as ex:
       logging.error(ex)