diff --git a/pyproject.toml b/pyproject.toml
index bb3a4cb7..cf4c5bb4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -102,7 +102,7 @@ select = [
 #    "PL", # Pylint (a subset of, catches far less than pylint does)
 #    "B", # Flake8 bugbear
     "A", # Flake8 builtins checker
-#    "C", # Flake8 comprehensions
+    "C", # Flake8 comprehensions
 #    "FIX", #TODO/FIXME's in code. These should be added during develoment for ongoing tasks.
            # If they are not fixed before merge they should be converted to GitLab issues
 #    "LOG", # Flake8 logging issues (pedantic logger formatting issues can be added with "G")
diff --git a/src/openflexure_microscope_server/things/camera_stage_mapping.py b/src/openflexure_microscope_server/things/camera_stage_mapping.py
index e26bf27b..4e4f1d53 100644
--- a/src/openflexure_microscope_server/things/camera_stage_mapping.py
+++ b/src/openflexure_microscope_server/things/camera_stage_mapping.py
@@ -87,7 +87,7 @@ def make_hardware_interface(
     axes = stage.axis_names
 
     def pos2dict(pos: Sequence[float]) -> Mapping[str, float]:
-        return {k: p for k, p in zip(axes, pos)}
+        return dict(zip(axes, pos))
 
     def dict2pos(posd: Mapping[str, float]) -> Sequence[float]:
         return tuple(posd[k] for k in axes if k in posd)
diff --git a/src/openflexure_microscope_server/things/stage/__init__.py b/src/openflexure_microscope_server/things/stage/__init__.py
index cc7c1bc3..81e30ce6 100644
--- a/src/openflexure_microscope_server/things/stage/__init__.py
+++ b/src/openflexure_microscope_server/things/stage/__init__.py
@@ -80,7 +80,7 @@ class BaseStage(Thing):
 
     position = PropertyDescriptor(
         Mapping[str, int],
-        {k: 0 for k in _axis_names},
+        dict.fromkeys(_axis_names, 0),
         description="Current position of the stage",
         readonly=True,
         observable=True,
diff --git a/src/openflexure_microscope_server/things/stage/dummy.py b/src/openflexure_microscope_server/things/stage/dummy.py
index 2608da7d..044a6625 100644
--- a/src/openflexure_microscope_server/things/stage/dummy.py
+++ b/src/openflexure_microscope_server/things/stage/dummy.py
@@ -91,5 +91,5 @@ class DummyStage(BaseStage):
         It is intended for use after manually or automatically recentring the
         stage.
         """
-        self.position = {k: 0 for k in self.axis_names}
+        self.position = dict.fromkeys(self.axis_names, 0)
         self.instantaneous_position = self.position