diff --git a/plugins/USBPrinting/USBPrinterOutputDeviceManager.py b/plugins/USBPrinting/USBPrinterOutputDeviceManager.py
index 7d1b3fea3b..b2cab36fa3 100644
--- a/plugins/USBPrinting/USBPrinterOutputDeviceManager.py
+++ b/plugins/USBPrinting/USBPrinterOutputDeviceManager.py
@@ -119,7 +119,7 @@ class USBPrinterOutputDeviceManager(QObject, OutputDevicePlugin, Extension):
             except FileNotFoundError:
                 # Should only happen in dev environments where the resources/firmware folder is absent.
                 self._usb_output_devices[printer_connection].setProgress(100, 100)
-                Logger.log("w", "No firmware found for printer %s called '%s'" % (printer_connection, self.getDefaultFirmwareName()))
+                Logger.log("w", "No firmware found for printer %s called '%s'" % (printer_connection, file_name)
                 Message(i18n_catalog.i18nc("@info",
                     "Could not find firmware required for the printer at %s.") % printer_connection).show()
                 self._firmware_view.close()
@@ -134,7 +134,7 @@ class USBPrinterOutputDeviceManager(QObject, OutputDevicePlugin, Extension):
                 self._usb_output_devices[serial_port].updateFirmware(file_name)
             except FileNotFoundError:
                 self._firmware_view.close()
-                Logger.log("e", "Could not find firmware required for this machine called '%s'" % (self.getDefaultFirmwareName()))
+                Logger.log("e", "Could not find firmware required for this machine called '%s'", file_name)
                 return False
             return True
         return False