diff --git a/cura/PrinterOutput/PrinterOutputDevice.py b/cura/PrinterOutput/PrinterOutputDevice.py
index ae916e434b..ec682a1739 100644
--- a/cura/PrinterOutput/PrinterOutputDevice.py
+++ b/cura/PrinterOutput/PrinterOutputDevice.py
@@ -220,6 +220,9 @@ class PrinterOutputDevice(QObject, OutputDevice):
             if printer.printerConfiguration is not None and printer.printerConfiguration.hasAnyMaterialLoaded():
                 all_configurations.add(printer.printerConfiguration)
             all_configurations.update(printer.availableConfigurations)
+        if None in all_configurations:  # Shouldn't happen, but it do. I don't see how it could ever happen. Skip adding that configuration. List could end up empty!
+            Logger.log("e", "Found a broken configuration in the synced list!")
+            all_configurations.remove(None)
         new_configurations = sorted(all_configurations, key = lambda config: config.printerType or "")
         if new_configurations != self._unique_configurations:
             self._unique_configurations = new_configurations