diff --git a/nnpdf_data/nnpdf_data/commondata/HERA_CC_318GEV/filter.py b/nnpdf_data/nnpdf_data/commondata/HERA_CC_318GEV/filter.py
index 5a2f5e28b8..166cfd9dc6 100644
--- a/nnpdf_data/nnpdf_data/commondata/HERA_CC_318GEV/filter.py
+++ b/nnpdf_data/nnpdf_data/commondata/HERA_CC_318GEV/filter.py
@@ -1,4 +1,4 @@
-from nnpdf_data.filter_utils.hera_utils import commondata, covmat_is_close
+from nnpdf_data.filter_utils.hera_utils import commondata #, covmat_is_close
 from pathlib import Path
 from dataclasses import dataclass
 import typing