diff --git a/src/spikeinterface/core/template.py b/src/spikeinterface/core/template.py
index 4eb82be2d6..8dda9136cc 100644
--- a/src/spikeinterface/core/template.py
+++ b/src/spikeinterface/core/template.py
@@ -300,6 +300,9 @@ def from_zarr_group(cls, zarr_group: "zarr.Group") -> "Templates":
         sampling_frequency = zarr_group.attrs["sampling_frequency"]
         nbefore = zarr_group.attrs["nbefore"]
 
+        # TODO: Consider eliminating the True and make it required
+        is_scaled = zarr_group.attrs.get("is_scaled", True)
+
         sparsity_mask = None
         if "sparsity_mask" in zarr_group:
             sparsity_mask = zarr_group["sparsity_mask"]
@@ -316,6 +319,7 @@ def from_zarr_group(cls, zarr_group: "zarr.Group") -> "Templates":
             channel_ids=channel_ids,
             unit_ids=unit_ids,
             probe=probe,
+            is_scaled=is_scaled,
         )
 
     @staticmethod
diff --git a/src/spikeinterface/core/tests/test_template_class.py b/src/spikeinterface/core/tests/test_template_class.py
index 0ed6bc2e3e..34a89ea5d5 100644
--- a/src/spikeinterface/core/tests/test_template_class.py
+++ b/src/spikeinterface/core/tests/test_template_class.py
@@ -7,7 +7,7 @@
 from probeinterface import generate_multi_columns_probe
 
 
-def generate_test_template(template_type):
+def generate_test_template(template_type, is_scaled=True) -> Templates:
     num_units = 2
     num_samples = 5
     num_channels = 3
@@ -21,7 +21,11 @@ def generate_test_template(template_type):
 
     if template_type == "dense":
         return Templates(
-            templates_array=templates_array, sampling_frequency=sampling_frequency, nbefore=nbefore, probe=probe
+            templates_array=templates_array,
+            sampling_frequency=sampling_frequency,
+            nbefore=nbefore,
+            probe=probe,
+            is_scaled=is_scaled,
         )
     elif template_type == "sparse":  # sparse with sparse templates
         sparsity_mask = np.array([[True, False, True], [False, True, False]])
@@ -42,6 +46,7 @@ def generate_test_template(template_type):
             sampling_frequency=sampling_frequency,
             nbefore=nbefore,
             probe=probe,
+            is_scaled=is_scaled,
         )
 
     elif template_type == "sparse_with_dense_templates":  # sparse with dense templates
@@ -53,12 +58,14 @@ def generate_test_template(template_type):
             sampling_frequency=sampling_frequency,
             nbefore=nbefore,
             probe=probe,
+            is_scaled=is_scaled,
         )
 
 
+@pytest.mark.parametrize("is_scaled", [True, False])
 @pytest.mark.parametrize("template_type", ["dense", "sparse"])
-def test_pickle_serialization(template_type, tmp_path):
-    template = generate_test_template(template_type)
+def test_pickle_serialization(template_type, is_scaled, tmp_path):
+    template = generate_test_template(template_type, is_scaled)
 
     # Dump to pickle
     pkl_path = tmp_path / "templates.pkl"
@@ -72,9 +79,10 @@ def test_pickle_serialization(template_type, tmp_path):
     assert template == template_reloaded
 
 
+@pytest.mark.parametrize("is_scaled", [True, False])
 @pytest.mark.parametrize("template_type", ["dense", "sparse"])
-def test_json_serialization(template_type):
-    template = generate_test_template(template_type)
+def test_json_serialization(template_type, is_scaled):
+    template = generate_test_template(template_type, is_scaled)
 
     json_str = template.to_json()
     template_reloaded_from_json = Templates.from_json(json_str)
@@ -82,9 +90,10 @@ def test_json_serialization(template_type):
     assert template == template_reloaded_from_json
 
 
+@pytest.mark.parametrize("is_scaled", [True, False])
 @pytest.mark.parametrize("template_type", ["dense", "sparse"])
-def test_get_dense_templates(template_type):
-    template = generate_test_template(template_type)
+def test_get_dense_templates(template_type, is_scaled):
+    template = generate_test_template(template_type, is_scaled)
     dense_templates = template.get_dense_templates()
     assert dense_templates.shape == (template.num_units, template.num_samples, template.num_channels)
 
@@ -94,9 +103,10 @@ def test_initialization_fail_with_dense_templates():
         template = generate_test_template(template_type="sparse_with_dense_templates")
 
 
+@pytest.mark.parametrize("is_scaled", [True, False])
 @pytest.mark.parametrize("template_type", ["dense", "sparse"])
-def test_save_and_load_zarr(template_type, tmp_path):
-    original_template = generate_test_template(template_type)
+def test_save_and_load_zarr(template_type, is_scaled, tmp_path):
+    original_template = generate_test_template(template_type, is_scaled)
 
     zarr_path = tmp_path / "templates.zarr"
     original_template.to_zarr(str(zarr_path))