diff --git a/lib/iris/tests/unit/fileformats/nc_load_rules/actions/__init__.py b/lib/iris/tests/unit/fileformats/nc_load_rules/actions/__init__.py
index f768ae3587..7c79740023 100644
--- a/lib/iris/tests/unit/fileformats/nc_load_rules/actions/__init__.py
+++ b/lib/iris/tests/unit/fileformats/nc_load_rules/actions/__init__.py
@@ -140,7 +140,7 @@ def run_testcase(self, warning_regex=None, **testcase_kwargs):
         if self.debug_info:
             print("\nCube:")
             print(cube)
-            print("")
+            print()
         return cube
 
     def _make_testcase_cdl(self, **kwargs):
diff --git a/lib/iris/tests/unit/fileformats/nc_load_rules/actions/test__latlon_dimcoords.py b/lib/iris/tests/unit/fileformats/nc_load_rules/actions/test__latlon_dimcoords.py
index fcaa67c308..15401a2ca1 100644
--- a/lib/iris/tests/unit/fileformats/nc_load_rules/actions/test__latlon_dimcoords.py
+++ b/lib/iris/tests/unit/fileformats/nc_load_rules/actions/test__latlon_dimcoords.py
@@ -133,9 +133,9 @@ def check_result(
         self.assertEqual(1, len(cube.coords(dim_coords=True)))
         (coord,) = coords
         if self.debug_info:
-            print("")
+            print()
             print("DEBUG : result coord =", coord)
-            print("")
+            print()
 
         coord_stdname, coord_longname, coord_units, coord_crs = [
             getattr(coord, name)