From 3947d7d7e2cecd4c7b903d5f8645a6f347ef7786 Mon Sep 17 00:00:00 2001
From: Tyler Hughes <tyler@flexcompute.com>
Date: Wed, 13 Nov 2024 10:05:55 -0500
Subject: [PATCH] fix

---
 tests/test_components/test_autograd.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/test_components/test_autograd.py b/tests/test_components/test_autograd.py
index 8657fed84..0cb7c9b0f 100644
--- a/tests/test_components/test_autograd.py
+++ b/tests/test_components/test_autograd.py
@@ -281,7 +281,7 @@ def make_structures(params: anp.ndarray) -> dict[str, td.Structure]:
     size_element = td.Structure(
         geometry=td.Box(center=(0, 0, 0), size=(1, size_y, 1)),
         medium=med,
-        background_medium=5.0,
+        background_medium=td.Medium(permittivity=5.0),
     )
 
     # custom medium with variable permittivity data