diff --git a/src/array_api_stubs/_draft/info.py b/src/array_api_stubs/_draft/info.py
index fd3ea9e84..1c15fc3ba 100644
--- a/src/array_api_stubs/_draft/info.py
+++ b/src/array_api_stubs/_draft/info.py
@@ -80,7 +80,9 @@ def default_device() -> device:
     Returns
     -------
     out: device
-        an object corresponding to the default device.
+        an object corresponding to the default device or ``None``.
+        A conforming array library may return ``None`` if the default device is not
+        predictable due to library specific device placement rules.
 
     Notes
     -----