diff --git a/test/test_um2netcdf.py b/test/test_um2netcdf.py
index 3fee38b..3acb190 100644
--- a/test/test_um2netcdf.py
+++ b/test/test_um2netcdf.py
@@ -759,7 +759,7 @@ def test_fix_plevs_no_pressure_coord(get_fake_cube_coords):
     with pytest.raises(iris.exceptions.CoordinateNotFoundError):
         cube.coord("pressure")  # ensure missing 'pressure' coord
 
-    um2nc.fix_plevs(cube)  # should just exit
+    um2nc.fix_pressure_levels(cube)  # should just exit
 
 
 def _add_attrs_points(m_plevs: mock.MagicMock, points):
@@ -775,7 +775,7 @@ def test_fix_plevs_do_rounding(get_fake_cube_coords):
     extra = {"pressure": m_plevs}
     cube = get_fake_cube_coords(extra)
 
-    um2nc.fix_plevs(cube)
+    um2nc.fix_pressure_levels(cube)
 
     # TODO: test flaw, this verifies pressure coord but ignores fix_plevs()
     #       returning a new cube if the pressure is reversed. This is verified
@@ -792,7 +792,7 @@ def test_fix_plevs_reverse_pressure(get_fake_cube_coords):
     cube = get_fake_cube_coords(extra)
 
     with mock.patch("iris.util.reverse"):
-        um2nc.fix_plevs(cube)
+        um2nc.fix_pressure_levels(cube)
 
     # TODO: test flaw, this verifies pressure coord but ignores fix_plevs()
     #       returning a new cube if the pressure is reversed. This is verified
diff --git a/umpost/um2netcdf.py b/umpost/um2netcdf.py
index 774bf44..f59e750 100644
--- a/umpost/um2netcdf.py
+++ b/umpost/um2netcdf.py
@@ -148,7 +148,7 @@ def _add_coord_bounds(coord):
 # TODO: split cube ops into functions, this will likely increase process() workflow steps
 def cubewrite(cube, sman, compression, use64bit, verbose):
     # TODO: move into process() AND if a new cube is returned, swap into filtered cube list
-    cube = fix_plevs(cube) or cube  # NB: use new cube if pressure points are modified
+    cube = fix_pressure_levels(cube) or cube  # NB: use new cube if pressure points are modified
 
     if not use64bit:
         if cube.data.dtype == 'float64':
@@ -727,7 +727,7 @@ def fix_level_coord(cube, z_rho, z_theta, tol=1e-6):
                 c_sigma.var_name = 'sigma_theta'
 
 
-def fix_plevs(cube, decimals=5):
+def fix_pressure_levels(cube, decimals=5):
     """
     Reformat pressure level data for NetCDF output.