diff --git a/src/rail/core/__init__.py b/src/rail/core/__init__.py
index 569f1e77..7a86fd90 100644
--- a/src/rail/core/__init__.py
+++ b/src/rail/core/__init__.py
@@ -18,6 +18,6 @@ def find_version():
 
 from .stage import RailPipeline, RailStage
 #from .utilPhotometry import PhotormetryManipulator, HyperbolicSmoothing, HyperbolicMagnitudes
-from .utilStages import ColumnMapper, RowSelector, TableConverter
+from .util_stages import ColumnMapper, RowSelector, TableConverter
 from .introspection import RailEnv
 from .point_estimation import PointEstimationMixin
diff --git a/src/rail/core/utilStages.py b/src/rail/core/util_stages.py
similarity index 100%
rename from src/rail/core/utilStages.py
rename to src/rail/core/util_stages.py
diff --git a/tests/core/test_core.py b/tests/core/test_core.py
index 881b08f1..4b72cd96 100644
--- a/tests/core/test_core.py
+++ b/tests/core/test_core.py
@@ -21,7 +21,7 @@
 )
 from rail.core.stage import RailStage
 from rail.core.utils import RAILDIR
-from rail.core.utilStages import (
+from rail.core.util_stages import (
     ColumnMapper,
     RowSelector,
     TableConverter,
diff --git a/tests/core/test_degraders.py b/tests/core/test_degraders.py
index 7c0eb082..bb1aead8 100644
--- a/tests/core/test_degraders.py
+++ b/tests/core/test_degraders.py
@@ -6,7 +6,7 @@
 import pytest
 
 from rail.core.data import DATA_STORE, TableHandle
-from rail.core.utilStages import ColumnMapper
+from rail.core.util_stages import ColumnMapper
 from rail.creation.degradation.quantityCut import QuantityCut
 from rail.creation.degradation.spectroscopic_selections import *
 
diff --git a/tests/core/test_pipeline.py b/tests/core/test_pipeline.py
index 9a17361d..c12bd2f9 100644
--- a/tests/core/test_pipeline.py
+++ b/tests/core/test_pipeline.py
@@ -7,7 +7,7 @@
 from rail.core.data import TableHandle
 from rail.core.stage import RailPipeline, RailStage
 from rail.core.utils import RAILDIR
-from rail.core.utilStages import ColumnMapper, TableConverter
+from rail.core.util_stages import ColumnMapper, TableConverter
 from rail.creation.degradation.quantityCut import QuantityCut
 
 def test_pipeline():