diff --git a/pts/dataset/artificial.py b/pts/dataset/artificial.py
index de36bd9..fdc3d4f 100644
--- a/pts/dataset/artificial.py
+++ b/pts/dataset/artificial.py
@@ -72,7 +72,7 @@ class ArtificialDataset:
         return TrainDatasets(
             metadata=self.metadata,
             train=ListDataset(self.train, self.freq),
-            test=ListDataset(self.test, self.freq, shuffle=False),
+            test=ListDataset(self.test, self.freq),
         )
 
 
@@ -697,7 +697,7 @@ class RecipeDataset(ArtificialDataset):
         return TrainDatasets(
             metadata=metadata,
             train=ListDataset(train_data, metadata.freq),
-            test=ListDataset(test_data, metadata.freq, is_train=False),
+            test=ListDataset(test_data, metadata.freq),
         )
 
 
diff --git a/pts/dataset/multivariate_grouper.py b/pts/dataset/multivariate_grouper.py
index d6aaaa2..765ba8e 100644
--- a/pts/dataset/multivariate_grouper.py
+++ b/pts/dataset/multivariate_grouper.py
@@ -144,7 +144,7 @@ class MultivariateGrouper:
             all_entries.append(grouped_data)
 
         return ListDataset(
-            all_entries, freq=self.frequency, one_dim_target=False, is_train=False
+            all_entries, freq=self.frequency, one_dim_target=False
         )
 
     def _align_data_entry(self, data: DataEntry) -> np.array: