diff --git a/gunpowder/nodes/array_source.py b/gunpowder/nodes/array_source.py
index e6f05507..ad4573e1 100644
--- a/gunpowder/nodes/array_source.py
+++ b/gunpowder/nodes/array_source.py
@@ -22,6 +22,12 @@ class ArraySource(BatchProvider):
         array (``Array``):
 
             A `funlib.persistence.Array` object.
+
+        interpolatable (``bool``, optional):
+
+            Whether the array is interpolatable. If not given it is
+            guessed based on dtype.
+
     """
 
     def __init__(
@@ -29,7 +35,6 @@ def __init__(
         key: ArrayKey,
         array: PersistenceArray,
         interpolatable: bool | None = None,
-        nonspatial: bool = False,
     ):
         self.key = key
         self.array = array
@@ -37,7 +42,7 @@ def __init__(
             self.array.roi,
             self.array.voxel_size,
             interpolatable,
-            nonspatial,
+            False,
             self.array.dtype,
         )
 
@@ -46,10 +51,7 @@ def setup(self):
 
     def provide(self, request):
         outputs = Batch()
-        if self.array_spec.nonspatial:
-            outputs[self.key] = Array(self.array[:], self.array_spec.copy())
-        else:
-            out_spec = self.array_spec.copy()
-            out_spec.roi = request[self.key].roi
-            outputs[self.key] = Array(self.array[out_spec.roi], out_spec)
+        out_spec = self.array_spec.copy()
+        out_spec.roi = request[self.key].roi
+        outputs[self.key] = Array(self.array[out_spec.roi], out_spec)
         return outputs
diff --git a/gunpowder/nodes/dvid_source.py b/gunpowder/nodes/dvid_source.py
index d285a502..312dd59e 100644
--- a/gunpowder/nodes/dvid_source.py
+++ b/gunpowder/nodes/dvid_source.py
@@ -182,11 +182,8 @@ def __get_spec(self, array_key):
             spec.dtype = data_dtype
 
         if spec.interpolatable is None:
-            spec.interpolatable = spec.dtype in (
-                np.sctypes["float"]
-                + [
-                    np.uint8,  # assuming this is not used for labels
-                ]
+            spec.interpolatable = np.issubdtype(spec.dtype, np.floating) or (
+                spec.dtype == np.uint8
             )
             logger.warning(
                 "WARNING: You didn't set 'interpolatable' for %s. "
diff --git a/gunpowder/nodes/hdf5like_source_base.py b/gunpowder/nodes/hdf5like_source_base.py
index d7c63149..f5a8e58b 100644
--- a/gunpowder/nodes/hdf5like_source_base.py
+++ b/gunpowder/nodes/hdf5like_source_base.py
@@ -174,11 +174,8 @@ def __read_spec(self, array_key, data_file, ds_name):
             spec.dtype = dataset.dtype
 
         if spec.interpolatable is None:
-            spec.interpolatable = spec.dtype in (
-                np.sctypes["float"]
-                + [
-                    np.uint8,  # assuming this is not used for labels
-                ]
+            spec.interpolatable = np.issubdtype(spec.dtype, np.floating) or (
+                spec.dtype == np.uint8
             )
             logger.warning(
                 "WARNING: You didn't set 'interpolatable' for %s "
diff --git a/gunpowder/nodes/klb_source.py b/gunpowder/nodes/klb_source.py
index 53eca5c4..d4a55049 100644
--- a/gunpowder/nodes/klb_source.py
+++ b/gunpowder/nodes/klb_source.py
@@ -155,11 +155,8 @@ def __read_spec(self, headers):
             spec.dtype = dtype
 
         if spec.interpolatable is None:
-            spec.interpolatable = spec.dtype in (
-                np.sctypes["float"]
-                + [
-                    np.uint8,  # assuming this is not used for labels
-                ]
+            spec.interpolatable = np.issubdtype(spec.dtype, np.floating) or (
+                spec.dtype == np.uint8
             )
             logger.warning(
                 "WARNING: You didn't set 'interpolatable' for %s. "
diff --git a/gunpowder/nodes/zarr_source.py b/gunpowder/nodes/zarr_source.py
index 2f1c15fc..82831fa3 100644
--- a/gunpowder/nodes/zarr_source.py
+++ b/gunpowder/nodes/zarr_source.py
@@ -206,11 +206,8 @@ def __read_spec(self, array_key, data_file, ds_name):
             spec.dtype = dataset.dtype
 
         if spec.interpolatable is None:
-            spec.interpolatable = spec.dtype in (
-                np.sctypes["float"]
-                + [
-                    np.uint8,  # assuming this is not used for labels
-                ]
+            spec.interpolatable = np.issubdtype(spec.dtype, np.floating) or (
+                spec.dtype == np.uint8
             )
             logger.warning(
                 "WARNING: You didn't set 'interpolatable' for %s "