diff --git a/comfy/model_detection.py b/comfy/model_detection.py
index 229fe499d..b98820d83 100644
--- a/comfy/model_detection.py
+++ b/comfy/model_detection.py
@@ -321,8 +321,9 @@ def model_config_from_unet(state_dict, unet_key_prefix, use_base_if_no_match=Fal
     if model_config is None and use_base_if_no_match:
         model_config = comfy.supported_models_base.BASE(unet_config)
 
-    scaled_fp8_weight = state_dict.get("{}scaled_fp8".format(unet_key_prefix), None)
-    if scaled_fp8_weight is not None:
+    scaled_fp8_key = "{}scaled_fp8".format(unet_key_prefix)
+    if scaled_fp8_key in state_dict:
+        scaled_fp8_weight = state_dict.pop(scaled_fp8_key)
         model_config.scaled_fp8 = scaled_fp8_weight.dtype
         if model_config.scaled_fp8 == torch.float32:
             model_config.scaled_fp8 = torch.float8_e4m3fn