diff --git a/cura/PrinterOutputDevice.py b/cura/PrinterOutputDevice.py
index 21f03a11ea..7f0b7c4c07 100644
--- a/cura/PrinterOutputDevice.py
+++ b/cura/PrinterOutputDevice.py
@@ -418,10 +418,14 @@ class PrinterOutputDevice(QObject, OutputDevice):
     #   /param index Index of the extruder
     #   /param hotend_id id of the hotend
     def _setHotendId(self, index, hotend_id):
-        if hotend_id and hotend_id != "" and hotend_id != self._hotend_ids[index]:
+        if hotend_id and hotend_id != self._hotend_ids[index]:
             Logger.log("d", "Setting hotend id of hotend %d to %s" % (index, hotend_id))
             self._hotend_ids[index] = hotend_id
             self.hotendIdChanged.emit(index, hotend_id)
+        elif not hotend_id:
+            Logger.log("d", "Removing hotend id of hotend %d.", index)
+            self._hotend_ids[index] = None
+            self.hotendIdChanged.emit(index, None)
 
     ##  Let the user decide if the hotends and/or material should be synced with the printer
     #   NB: the UX needs to be implemented by the plugin
diff --git a/resources/qml/PrintMonitor.qml b/resources/qml/PrintMonitor.qml
index 16be06c95e..7274e8670d 100644
--- a/resources/qml/PrintMonitor.qml
+++ b/resources/qml/PrintMonitor.qml
@@ -96,7 +96,7 @@ Column
                     }
                     Label //Temperature indication.
                     {
-                        text: (connectedPrinter != null && connectedPrinter.hotendTemperatures[index] != null) ? Math.round(connectedPrinter.hotendTemperatures[index]) + "°C" : ""
+                        text: (connectedPrinter != null && connectedPrinter.hotendIds[index] != null && connectedPrinter.hotendTemperatures[index] != null) ? Math.round(connectedPrinter.hotendTemperatures[index]) + "°C" : ""
                         color: UM.Theme.getColor("text")
                         font: UM.Theme.getFont("large")
                         anchors.right: parent.right