diff --git a/scripts/importer/data_importer/reference_set_importer.py b/scripts/importer/data_importer/reference_set_importer.py
index 675b6c353..1f7e6f342 100644
--- a/scripts/importer/data_importer/reference_set_importer.py
+++ b/scripts/importer/data_importer/reference_set_importer.py
@@ -60,7 +60,6 @@ def _insert_features(self):
         batch = []
         i = 0
         with db.database.atomic():
-            i = 0
             for feature in self.features:
                 batch += [{'gene':self.gene_db_ids[feature['gene_id']],
                            'transcript':self.transcript_db_ids[feature['transcript_id']],