diff --git a/comfy/utils.py b/comfy/utils.py
index 8d4e2b445..e4162d7ac 100644
--- a/comfy/utils.py
+++ b/comfy/utils.py
@@ -1230,6 +1230,8 @@ def convert_old_quants(state_dict, model_prefix="", metadata={}):
             out_sd = {}
             layers = {}
             for k in list(state_dict.keys()):
+                if k == scaled_fp8_key:
+                    continue
                 if not k.startswith(model_prefix):
                     out_sd[k] = state_dict[k]
                     continue