From d50f342c90802830c1178ad9d7f2783dc2821af1 Mon Sep 17 00:00:00 2001
From: comfyanonymous <121283862+comfyanonymous@users.noreply.github.com>
Date: Mon, 8 Dec 2025 20:20:04 -0800
Subject: [PATCH] Fix potential issue. (#11201)

---
 comfy/model_patcher.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/comfy/model_patcher.py b/comfy/model_patcher.py
index a7d24ac13..2e8ce2613 100644
--- a/comfy/model_patcher.py
+++ b/comfy/model_patcher.py
@@ -923,7 +923,7 @@ class ModelPatcher:
                                     patch_counter += 1
                             cast_weight = True
 
-                        if cast_weight:
+                        if cast_weight and hasattr(m, "comfy_cast_weights"):
                             m.prev_comfy_cast_weights = m.comfy_cast_weights
                             m.comfy_cast_weights = True
                         m.comfy_patched_weights = False