diff --git a/jaxley/modules/base.py b/jaxley/modules/base.py
index b70db9c6..50f73ced 100644
--- a/jaxley/modules/base.py
+++ b/jaxley/modules/base.py
@@ -667,7 +667,7 @@ def _vis(self, ax, col, dims, view, morph_plot_kwargs):
         coords = [self.xyzr[branch_ind] for branch_ind in branches_inds]
 
         assert not np.any(
-            np.isnan(self.xyzr[:, :, dims])
+            np.isnan(np.asarray(self.xyzr)[:, :, dims])
         ), "No coordinates available. Use `vis(detail='point')` or run `.compute_xyz()` before running `.vis()`."
         ax = plot_swc(
             coords,
@@ -723,7 +723,7 @@ def compute_xyz(self):
             ]
             endpoints.append(end_point)
 
-            self.xyzr[b, :, :2] = np.asarray([start_point, end_point])
+            self.xyzr[b][:, :2] = np.asarray([start_point, end_point])
 
 
 class View:
diff --git a/jaxley/modules/cell.py b/jaxley/modules/cell.py
index 2d6aa922..5727d413 100644
--- a/jaxley/modules/cell.py
+++ b/jaxley/modules/cell.py
@@ -57,7 +57,7 @@ def __init__(
             # Since `xyzr` is only inspected at `.vis()` and because it depends on the
             # (potentially learned) length of every compartment, we only populate
             # self.xyzr at `.vis()`.
-            self.xyzr = float("NaN") * np.zeros((len(parents), 2, 4))
+            self.xyzr = [float("NaN") * np.zeros((2, 4)) for _ in range(len(parents))]
 
         self._append_to_params_and_state(branch_list)
         for branch in branch_list:
diff --git a/jaxley/modules/network.py b/jaxley/modules/network.py
index d41984f4..8a391409 100644
--- a/jaxley/modules/network.py
+++ b/jaxley/modules/network.py
@@ -392,8 +392,8 @@ def vis(
                     c=synapse_col,
                     **synapse_scatter_kwargs,
                 )
-            else:
-                raise ValueError("detail must be in {full, point}.")
+        else:
+            raise ValueError("detail must be in {full, point}.")
 
         return ax