diff --git a/examples/task-plugins/dioptra_custom/fgm_mnist_demo/attacks_patch.py b/examples/task-plugins/dioptra_custom/fgm_mnist_demo/attacks_patch.py
index 516dc7bc8..b44a17133 100644
--- a/examples/task-plugins/dioptra_custom/fgm_mnist_demo/attacks_patch.py
+++ b/examples/task-plugins/dioptra_custom/fgm_mnist_demo/attacks_patch.py
@@ -269,7 +269,7 @@ def _log_distance_metrics(distance_metrics_: Dict[str, List[List[float]]]) -> No
     del distance_metrics_["image"]
     del distance_metrics_["label"]
     for metric_name, metric_values_list in distance_metrics_.items():
-        metric_values = np.array(metric_values_list)
+        metric_values = np.array(metric_values_list).astype('float64')
         post_metrics(metric_name=f"{metric_name}_mean", metric_value=metric_values.mean())
         post_metrics(metric_name=f"{metric_name}_median", metric_value=np.median(metric_values))
         post_metrics(metric_name=f"{metric_name}_stdev", metric_value=metric_values.std())
diff --git a/examples/task-plugins/dioptra_custom/fgm_mnist_demo/defenses_image_preprocessing.py b/examples/task-plugins/dioptra_custom/fgm_mnist_demo/defenses_image_preprocessing.py
index 8f64650bd..970066bf2 100644
--- a/examples/task-plugins/dioptra_custom/fgm_mnist_demo/defenses_image_preprocessing.py
+++ b/examples/task-plugins/dioptra_custom/fgm_mnist_demo/defenses_image_preprocessing.py
@@ -173,7 +173,7 @@ def _log_distance_metrics(distance_metrics_: Dict[str, List[List[float]]]) -> No
     del distance_metrics_["image"]
     del distance_metrics_["label"]
     for metric_name, metric_values_list in distance_metrics_.items():
-        metric_values = np.array(metric_values_list)
+        metric_values = np.array(metric_values_list).astype('float64')
         post_metrics(metric_name=f"{metric_name}_mean", metric_value=metric_values.mean())
         post_metrics(metric_name=f"{metric_name}_median", metric_value=np.median(metric_values))
         post_metrics(metric_name=f"{metric_name}_stdev", metric_value=metric_values.std())
diff --git a/examples/task-plugins/dioptra_custom/fgm_mnist_demo/mlflow.py b/examples/task-plugins/dioptra_custom/fgm_mnist_demo/mlflow.py
index 9e7e88874..4a3787740 100644
--- a/examples/task-plugins/dioptra_custom/fgm_mnist_demo/mlflow.py
+++ b/examples/task-plugins/dioptra_custom/fgm_mnist_demo/mlflow.py
@@ -73,29 +73,6 @@ def add_model_to_registry(name: str, model_dir: str) -> Optional[ModelVersion]:
     return model_version
 
 
-@pyplugs.register
-def get_experiment_name() -> str:
-    """Gets the name of the experiment for the current run.
-
-    Args:
-        active_run: The :py:class:`mlflow.ActiveRun` object managing the current run's
-            state.
-
-    Returns:
-        The name of the experiment.
-    """
-    active_run = mlflow.active_run()
-
-    experiment_name: str = (
-        MlflowClient().get_experiment(active_run.info.experiment_id).name
-    )
-    LOGGER.info(
-        "Obtained experiment name of active run", experiment_name=experiment_name
-    )
-
-    return experiment_name
-
-
 @pyplugs.register
 def prepend_cwd(path: str) -> Path:
     ret = Path.cwd() / path
diff --git a/examples/task-plugins/dioptra_custom/fgm_mnist_demo/registry_mlflow.py b/examples/task-plugins/dioptra_custom/fgm_mnist_demo/registry_mlflow.py
index 23d8519aa..c8944756f 100644
--- a/examples/task-plugins/dioptra_custom/fgm_mnist_demo/registry_mlflow.py
+++ b/examples/task-plugins/dioptra_custom/fgm_mnist_demo/registry_mlflow.py
@@ -81,27 +81,6 @@ def add_model_to_registry(
     return model_version
 
 
-@pyplugs.register
-def get_experiment_name(active_run: MlflowRun) -> str:
-    """Gets the name of the experiment for the current run.
-
-    Args:
-        active_run: The :py:class:`mlflow.ActiveRun` object managing the current run's
-            state.
-
-    Returns:
-        The name of the experiment.
-    """
-    experiment_name: str = (
-        MlflowClient().get_experiment(active_run.info.experiment_id).name
-    )
-    LOGGER.info(
-        "Obtained experiment name of active run", experiment_name=experiment_name
-    )
-
-    return experiment_name
-
-
 @pyplugs.register
 @require_package("tensorflow", exc_type=TensorflowDependencyError)
 def load_tensorflow_keras_classifier(uri: str) -> Sequential: