diff --git a/cura/PrinterOutput/GenericOutputController.py b/cura/PrinterOutput/GenericOutputController.py
index da4194446a..93403264c1 100644
--- a/cura/PrinterOutput/GenericOutputController.py
+++ b/cura/PrinterOutput/GenericOutputController.py
@@ -58,7 +58,7 @@ class GenericOutputController(PrinterOutputController):
         self._output_device.sendCommand("G90")
 
     def homeHead(self, printer):
-        # Ultimaker+ frimware is 'Marlin V1' and UM2 is "Marlin Ultimaker2"
+        # Ultimaker+ firmware is 'Marlin V1' and UM2 is "Marlin Ultimaker2"
         # For this reason UM2 should move only X, Y and not Z, otherwise it might brake the build plate
         name = self._output_device.getFirmwareName()
         if name and name.find("Ultimaker2") != -1:
diff --git a/plugins/USBPrinting/USBPrinterOutputDevice.py b/plugins/USBPrinting/USBPrinterOutputDevice.py
index 65504d530f..fbb35a1df0 100644
--- a/plugins/USBPrinting/USBPrinterOutputDevice.py
+++ b/plugins/USBPrinting/USBPrinterOutputDevice.py
@@ -230,7 +230,7 @@ class USBPrinterOutputDevice(PrinterOutputDevice):
         self._baud_rate = baud_rate
 
     def connect(self):
-        self._firmware_name = None # after each connection ensure that the frimware name is removed
+        self._firmware_name = None # after each connection ensure that the firmware name is removed
 
         if self._baud_rate is None:
             if self._use_auto_detect:
@@ -417,4 +417,4 @@ class FirmwareUpdateState(IntEnum):
     unknown_error = 3
     communication_error = 4
     io_error = 5
-    firmware_not_found_error = 6
\ No newline at end of file
+    firmware_not_found_error = 6