diff --git a/odc/stats/plugins/l34_utils/l4_cultivated.py b/odc/stats/plugins/l34_utils/l4_cultivated.py
index 8ae8f8c3..82b0e69c 100644
--- a/odc/stats/plugins/l34_utils/l4_cultivated.py
+++ b/odc/stats/plugins/l34_utils/l4_cultivated.py
@@ -4,7 +4,7 @@
 
 
 def lc_l4_cultivated(l34, level3, woody, veg_cover):
-    
+
     woody = expr_eval(
         "where((a!=a), nodata, a)",
         {"a": woody.data},
@@ -13,7 +13,7 @@ def lc_l4_cultivated(l34, level3, woody, veg_cover):
         **{"nodata": NODATA},
     )
 
-      # the 4-8 classes can't happen in LC since cultivated class will not be classified if vegetation doesn't exist.
+    # the 4-8 classes can't happen in LC since cultivated class will not be classified if vegetation doesn't exist.
     # skip these classes in level4
     l4 = expr_eval(
         "where((a==111), 1, d)",
@@ -42,7 +42,7 @@ def lc_l4_cultivated(l34, level3, woody, veg_cover):
         name="mark_cultivated",
         dtype="uint8",
     )
-    
+
     l4 = expr_eval(
         "where((a==111)&(b==12)&(c==113), 10, d)",
         {"a": level3, "b": veg_cover, "c": woody, "d": l4},
@@ -101,8 +101,4 @@ def lc_l4_cultivated(l34, level3, woody, veg_cover):
         dtype="uint8",
     )
 
-    
-
-  
-
     return l4
diff --git a/odc/stats/plugins/l34_utils/l4_natural_veg.py b/odc/stats/plugins/l34_utils/l4_natural_veg.py
index 4b40a5ca..edb92161 100644
--- a/odc/stats/plugins/l34_utils/l4_natural_veg.py
+++ b/odc/stats/plugins/l34_utils/l4_natural_veg.py
@@ -12,7 +12,7 @@ def lc_l4_natural_veg(l4, l3, woody, veg_cover):
         dtype="float32",
         **{"nodata": NODATA},
     )
-    
+
     l4 = expr_eval(
         "where((b==nodata), nodata, a)",
         {"a": l4, "b": l3},
@@ -20,14 +20,14 @@ def lc_l4_natural_veg(l4, l3, woody, veg_cover):
         dtype="uint8",
         **{"nodata": NODATA},
     )
-    
+
     l4 = expr_eval(
         "where((a==112), 19, d)",
         {"a": l3, "d": l4},
         name="mark_cultivated",
         dtype="uint8",
     )
-    
+
     l4 = expr_eval(
         "where((a==112)&(b==113), 20, d)",
         {"a": l3, "b": woody, "d": l4},
@@ -137,6 +137,4 @@ def lc_l4_natural_veg(l4, l3, woody, veg_cover):
         dtype="uint8",
     )
 
-
-
     return l4
diff --git a/odc/stats/plugins/l34_utils/l4_surface.py b/odc/stats/plugins/l34_utils/l4_surface.py
index cb96e0cb..fcf640ba 100644
--- a/odc/stats/plugins/l34_utils/l4_surface.py
+++ b/odc/stats/plugins/l34_utils/l4_surface.py
@@ -33,5 +33,5 @@ def lc_l4_surface(l4, level3, bare_gradation):
         name="mark_surface",
         dtype="uint8",
     )
-    
+
     return l4
diff --git a/odc/stats/plugins/l34_utils/l4_water.py b/odc/stats/plugins/l34_utils/l4_water.py
index 478dd4be..8e05c64a 100644
--- a/odc/stats/plugins/l34_utils/l4_water.py
+++ b/odc/stats/plugins/l34_utils/l4_water.py
@@ -5,7 +5,6 @@
 
 def water_classification(xx, water_persistence):
 
-
     # Replace nan with nodata
     l4 = expr_eval(
         "where((a==a), a, nodata)",
@@ -14,7 +13,7 @@ def water_classification(xx, water_persistence):
         dtype="uint8",
         **{"nodata": NODATA},
     )
-    
+
     intertidal_mask = expr_eval(
         "where(a==_u, 1, 0)",
         {"a": l4},
diff --git a/tests/test_lc_l4_ctv.py b/tests/test_lc_l4_ctv.py
index 6f0035ab..16546d0c 100644
--- a/tests/test_lc_l4_ctv.py
+++ b/tests/test_lc_l4_ctv.py
@@ -365,8 +365,8 @@ def test_ctv_classes_no_vegcover():
 
     stats_l4 = StatsLccsLevel4()
     level3 = lc_level3.lc_level3(xx)
-   
+
     veg_cover = l4_veg_cover.canopyco_veg_con(xx, stats_l4.veg_threshold)
     l4_ctv = l4_cultivated.lc_l4_cultivated(xx.level_3_4, level3, xx.woody, veg_cover)
-    
+
     assert (l4_ctv.compute() == expected_cultivated_classes).all()
diff --git a/tests/test_lc_l4_water.py b/tests/test_lc_l4_water.py
index b612ee50..851e3d75 100644
--- a/tests/test_lc_l4_water.py
+++ b/tests/test_lc_l4_water.py
@@ -168,9 +168,7 @@ def test_water_classes():
         xx, stats_l4.watper_threshold
     )
 
-    l4_water_classes = l4_water.water_classification(
-        xx, water_persistence
-    )
+    l4_water_classes = l4_water.water_classification(xx, water_persistence)
 
     assert (l4_water_classes.compute() == expected_water_classes).all()
 
@@ -276,8 +274,6 @@ def test_water_intertidal():
         xx, stats_l4.watper_threshold
     )
 
-    l4_water_classes = l4_water.water_classification(
-        xx, water_persistence
-    )
+    l4_water_classes = l4_water.water_classification(xx, water_persistence)
 
     assert (l4_water_classes.compute() == expected_water_classes).all()