diff --git a/plugins/UM3NetworkPrinting/src/Models.py b/plugins/UM3NetworkPrinting/src/Models.py
index e84a39db5a..d5e1007555 100644
--- a/plugins/UM3NetworkPrinting/src/Models.py
+++ b/plugins/UM3NetworkPrinting/src/Models.py
@@ -1,33 +1,33 @@
 # Copyright (c) 2018 Ultimaker B.V.
 # Cura is released under the terms of the LGPLv3 or higher.
-from typing import NamedTuple
+from collections import namedtuple
 
-ClusterMaterial = NamedTuple("ClusterMaterial", [
-    ("guid", str),
-    ("material", str),
-    ("brand", str),
-    ("version", int),
-    ("color", str),
-    ("density", str),
+ClusterMaterial = namedtuple('ClusterMaterial', [
+    'guid',      # Type: str
+    'material',              # Type: str
+    'brand',                 # Type: str
+    'version',               # Type: int
+    'color',                 # Type: str
+    'density'                # Type: str
 ])
 
-LocalMaterial = NamedTuple("LocalMaterial", [
-    ("GUID", str),
-    ("id", str),
-    ("type", str),
-    ("status", str),
-    ("base_file", str),
-    ("setting_version", int),
-    ("version", int),
-    ("name", str),
-    ("brand", str),
-    ("material", str),
-    ("color_name", str),
-    ("color_code", str),
-    ("description", str),
-    ("adhesion_info", str),
-    ("approximate_diameter", str),
-    ("properties", str),
-    ("definition", str),
-    ("compatible", str),
+LocalMaterial = namedtuple('LocalMaterial', [
+    'GUID',                  # Type: str
+    'id',                    # Type: str
+    'type',                  # Type: str
+    'status',                # Type: str
+    'base_file',             # Type: str
+    'setting_version',       # Type: int
+    'version',               # Type: int
+    'name',                  # Type: str
+    'brand',                 # Type: str
+    'material',              # Type: str
+    'color_name',            # Type: str
+    'color_code',            # Type: str
+    'description',           # Type: str
+    'adhesion_info',         # Type: str
+    'approximate_diameter',  # Type: str
+    'properties',            # Type: str
+    'definition',            # Type: str
+    'compatible'             # Type: str
 ])