diff --git a/comfy_api_nodes/apinode_utils.py b/comfy_api_nodes/apinode_utils.py
index 5a507a6ac..e5d0e29a9 100644
--- a/comfy_api_nodes/apinode_utils.py
+++ b/comfy_api_nodes/apinode_utils.py
@@ -331,10 +331,10 @@ def upload_images_to_comfyapi(
         img_binary = tensor_to_bytesio(curr_image, mime_type=mime_type)
         # first, request upload/download urls from comfy API
         if not mime_type:
-            request_object = UploadRequest(filename=img_binary.name)
+            request_object = UploadRequest(file_name=img_binary.name)
         else:
             request_object = UploadRequest(
-                filename=img_binary.name, content_type=mime_type
+                file_name=img_binary.name, content_type=mime_type
             )
         operation = SynchronousOperation(
             endpoint=ApiEndpoint(
diff --git a/comfy_api_nodes/apis/client.py b/comfy_api_nodes/apis/client.py
index e9c68bf5b..032c02b2e 100644
--- a/comfy_api_nodes/apis/client.py
+++ b/comfy_api_nodes/apis/client.py
@@ -128,7 +128,7 @@ class EmptyRequest(BaseModel):
 
 
 class UploadRequest(BaseModel):
-    filename: str = Field(..., description="Filename to upload")
+    file_name: str = Field(..., description="Filename to upload")
     content_type: str | None = Field(
         None,
         description="Mime type of the file. For example: image/png, image/jpeg, video/mp4, etc.",