diff --git a/cura/PrinterOutputDevice.py b/cura/PrinterOutputDevice.py
index ab727d723d..bdac80e61c 100644
--- a/cura/PrinterOutputDevice.py
+++ b/cura/PrinterOutputDevice.py
@@ -200,7 +200,7 @@ class PrinterOutputDevice(QObject, OutputDevice):
 
     # Returns the unique configurations of the printers within this output device
     @pyqtProperty("QVariantList", notify = uniqueConfigurationsChanged)
-    def uniqueConfigurations(self) -> List[ConfigurationModel]:
+    def uniqueConfigurations(self) -> List["ConfigurationModel"]:
         return self._unique_configurations
 
     def _updateUniqueConfigurations(self) -> None: