diff --git a/cura/GlobalStacksModel.py b/cura/GlobalStacksModel.py
index 3ad110b7d0..939809151d 100644
--- a/cura/GlobalStacksModel.py
+++ b/cura/GlobalStacksModel.py
@@ -48,7 +48,7 @@ class GlobalStacksModel(ListModel):
         container_stacks = ContainerRegistry.getInstance().findContainerStacks(type = "machine")
 
         for container_stack in container_stacks:
-            connection_type = int(container_stack.getMetaDataEntry("connection_type", "-1"))
+            connection_type = int(container_stack.getMetaDataEntry("connection_type", ConnectionType.NotConnected.value))
             has_remote_connection = connection_type in [ConnectionType.NetworkConnection.value, ConnectionType.CloudConnection.value]
             if container_stack.getMetaDataEntry("hidden", False) in ["True", True]:
                 continue
diff --git a/cura/PrinterOutputDevice.py b/cura/PrinterOutputDevice.py
index aeeb0381b2..99e8835c2f 100644
--- a/cura/PrinterOutputDevice.py
+++ b/cura/PrinterOutputDevice.py
@@ -36,7 +36,7 @@ class ConnectionState(IntEnum):
 
 
 class ConnectionType(IntEnum):
-    Unknown = 0
+    NotConnected = 0
     UsbConnection = 1
     NetworkConnection = 2
     CloudConnection = 3
@@ -74,7 +74,7 @@ class PrinterOutputDevice(QObject, OutputDevice):
     # Signal to indicate that the configuration of one of the printers has changed.
     uniqueConfigurationsChanged = pyqtSignal()
 
-    def __init__(self, device_id: str, connection_type: "ConnectionType" = ConnectionType.Unknown, parent: QObject = None) -> None:
+    def __init__(self, device_id: str, connection_type: "ConnectionType" = ConnectionType.NotConnected, parent: QObject = None) -> None:
         super().__init__(device_id = device_id, parent = parent) # type: ignore  # MyPy complains with the multiple inheritance
 
         self._printers = []  # type: List[PrinterOutputModel]
diff --git a/cura/Settings/MachineManager.py b/cura/Settings/MachineManager.py
index 5b99b73b3c..32b83ead28 100755
--- a/cura/Settings/MachineManager.py
+++ b/cura/Settings/MachineManager.py
@@ -527,7 +527,7 @@ class MachineManager(QObject):
     @pyqtProperty(bool, notify = printerConnectedStatusChanged)
     def activeMachineHasRemoteConnection(self) -> bool:
         if self._global_container_stack:
-            connection_type = int(self._global_container_stack.getMetaDataEntry("connection_type", "-1"))
+            connection_type = int(self._global_container_stack.getMetaDataEntry("connection_type", ConnectionType.NotConnected.value))
             return connection_type in [ConnectionType.NetworkConnection.value, ConnectionType.CloudConnection.value]
         return False