diff --git a/cura/PrinterOutput/UploadMaterialsJob.py b/cura/PrinterOutput/UploadMaterialsJob.py
index ebadb35257..166b692ea5 100644
--- a/cura/PrinterOutput/UploadMaterialsJob.py
+++ b/cura/PrinterOutput/UploadMaterialsJob.py
@@ -2,6 +2,7 @@
 # Cura is released under the terms of the LGPLv3 or higher.
 
 import enum
+import functools  # For partial methods to use as callbacks with information pre-filled.
 import json  # To serialise metadata for API calls.
 import os  # To delete the archive when we're done.
 from PyQt5.QtCore import QUrl
@@ -177,8 +178,8 @@ class UploadMaterialsJob(Job):
             http = HttpRequestManager.getInstance()
             http.post(
                 url = self.UPLOAD_CONFIRM_URL.format(cluster_id = cluster_id, cluster_printer_id = printer_id),
-                callback = lambda reply: self.onUploadConfirmed(printer_id, reply, None),
-                error_callback = lambda reply, error: self.onUploadConfirmed(printer_id, reply, error),  # Let this same function handle the error too.
+                callback = functools.partial(self.onUploadConfirmed, printer_id),
+                error_callback = functools.partial(self.onUploadConfirmed, printer_id),  # Let this same function handle the error too.
                 scope = self._scope,
                 data = json.dumps({"data": {"material_profile_id": self._archive_remote_id}}).encode("UTF-8")
             )