diff --git a/skpro/distributions/base/_base_array.py b/skpro/distributions/base/_base_array.py
index 9d6e1fae2..b3998dcdd 100644
--- a/skpro/distributions/base/_base_array.py
+++ b/skpro/distributions/base/_base_array.py
@@ -229,7 +229,7 @@ def _get_bc_params_dict(
         index_column_broadcast.append(kwargs_as_np["index"])
         index_column_broadcast.append(kwargs_as_np["columns"])
 
-        bc = np.broadcast_arrays(*index_column_broadcast)
+        bc = list(np.broadcast_arrays(*index_column_broadcast))
         if dtype is not None:
             bc = [array.astype(dtype) for array in bc]