diff --git a/nnpdf_data/nnpdf_data/commondata/HERA_NC_225GEV/filter.py b/nnpdf_data/nnpdf_data/commondata/HERA_NC_225GEV/filter.py
index b1db08a9ff..bce0dc1c93 100644
--- a/nnpdf_data/nnpdf_data/commondata/HERA_NC_225GEV/filter.py
+++ b/nnpdf_data/nnpdf_data/commondata/HERA_NC_225GEV/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
diff --git a/nnpdf_data/nnpdf_data/commondata/HERA_NC_251GEV/filter.py b/nnpdf_data/nnpdf_data/commondata/HERA_NC_251GEV/filter.py
index 15f8a575a9..d634ad2d03 100644
--- a/nnpdf_data/nnpdf_data/commondata/HERA_NC_251GEV/filter.py
+++ b/nnpdf_data/nnpdf_data/commondata/HERA_NC_251GEV/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
diff --git a/nnpdf_data/nnpdf_data/commondata/HERA_NC_300GEV/filter.py b/nnpdf_data/nnpdf_data/commondata/HERA_NC_300GEV/filter.py
index 40c6a9b8c9..968265df82 100644
--- a/nnpdf_data/nnpdf_data/commondata/HERA_NC_300GEV/filter.py
+++ b/nnpdf_data/nnpdf_data/commondata/HERA_NC_300GEV/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
diff --git a/nnpdf_data/nnpdf_data/commondata/HERA_NC_318GEV/filter.py b/nnpdf_data/nnpdf_data/commondata/HERA_NC_318GEV/filter.py
index eb08daf119..df486a068a 100644
--- a/nnpdf_data/nnpdf_data/commondata/HERA_NC_318GEV/filter.py
+++ b/nnpdf_data/nnpdf_data/commondata/HERA_NC_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
diff --git a/nnpdf_data/nnpdf_data/commondata/HERA_NC_318GEV_EAVG/filter.py b/nnpdf_data/nnpdf_data/commondata/HERA_NC_318GEV_EAVG/filter.py
index af4925d248..0c45dc48a9 100644
--- a/nnpdf_data/nnpdf_data/commondata/HERA_NC_318GEV_EAVG/filter.py
+++ b/nnpdf_data/nnpdf_data/commondata/HERA_NC_318GEV_EAVG/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