diff --git a/brushnet_nodes.py b/brushnet_nodes.py
index e8bc9f1..4e83b7f 100644
--- a/brushnet_nodes.py
+++ b/brushnet_nodes.py
@@ -937,9 +937,13 @@ def add_brushnet_patch(model, brushnet, torch_dtype, conditioning_latents,
     
     is_SDXL = isinstance(model.model.model_config, comfy.supported_models.SDXL)
 
-    fp8 = model.model.model_config.optimizations.get("fp8", model.model.model_config.scaled_fp8 is not None)
-    operations = comfy.ops.pick_operations(model.model.model_config.unet_config.get("dtype", None), model.model.manual_cast_dtype,
-                                           fp8_optimizations=fp8, scaled_fp8=model.model.model_config.scaled_fp8)
+    if model.model.model_config.custom_operations is None:
+        fp8 = model.model.model_config.optimizations.get("fp8", model.model.model_config.scaled_fp8 is not None)
+        operations = comfy.ops.pick_operations(model.model.model_config.unet_config.get("dtype", None), model.model.manual_cast_dtype,
+                                               fp8_optimizations=fp8, scaled_fp8=model.model.model_config.scaled_fp8)
+    else:
+        # such as gguf
+        operations = model.model.model_config.custom_operations
 
     if is_SDXL:
         input_blocks = [[0, operations.Conv2d],