diff --git a/comfy_api_nodes/apis/client.py b/comfy_api_nodes/apis/client.py
index df8b36776..3300596b3 100644
--- a/comfy_api_nodes/apis/client.py
+++ b/comfy_api_nodes/apis/client.py
@@ -251,7 +251,7 @@ class ApiClient:
         files: Dict[str, Any],
         headers: Optional[Dict[str, str]] = None,
     ) -> Dict[str, Any]:
-        if headers:
+        if headers and "Content-Type" in headers:
             del headers["Content-Type"]
 
         return {