diff --git a/plugins/FirmwareUpdateChecker/FirmwareUpdateChecker.py b/plugins/FirmwareUpdateChecker/FirmwareUpdateChecker.py
index 994493a4e6..770aace3fe 100644
--- a/plugins/FirmwareUpdateChecker/FirmwareUpdateChecker.py
+++ b/plugins/FirmwareUpdateChecker/FirmwareUpdateChecker.py
@@ -1,6 +1,6 @@
-# Copyright (c) 2015 Ultimaker B.V.
+# Copyright (c) 2017 Ultimaker B.V.
 # Cura is released under the terms of the AGPLv3 or higher.
-from UM.Application import Application
+
 from UM.Extension import Extension
 from UM.Preferences import Preferences
 from UM.Logger import Logger
@@ -33,9 +33,9 @@ class FirmwareUpdateChecker(Extension):
             ContainerRegistry.getInstance().containerAdded.connect(self._onContainerAdded)
 
     def _onContainerAdded(self, container):
-        # Only take care when a new GlobaStack was added
-        if (isinstance(container, GlobalStack)):
-            Logger.log("i", "You have a '%s' in printer list. Let's check the firmware!" % container.getId())
+        # Only take care when a new GlobalStack was added
+        if isinstance(container, GlobalStack):
+            Logger.log("i", "You have a '%s' in printer list. Let's check the firmware!", container.getId())
             self.checkFirmwareVersion(container, True)
 
     ##  Connect with software.ultimaker.com, load latest.version and check version info.
@@ -46,4 +46,4 @@ class FirmwareUpdateChecker(Extension):
     #                               This is used when checking for a new firmware version at startup.
     def checkFirmwareVersion(self, container = None, silent = False):
         job = FirmwareUpdateCheckerJob(container = container, silent = silent, url = self.url)
-        job.start()
\ No newline at end of file
+        job.start()
diff --git a/plugins/FirmwareUpdateChecker/FirmwareUpdateCheckerJob.py b/plugins/FirmwareUpdateChecker/FirmwareUpdateCheckerJob.py
index 9e0db57ed7..b95a2b1097 100644
--- a/plugins/FirmwareUpdateChecker/FirmwareUpdateCheckerJob.py
+++ b/plugins/FirmwareUpdateChecker/FirmwareUpdateCheckerJob.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2015 Ultimaker B.V.
+# Copyright (c) 2017 Ultimaker B.V.
 # Cura is released under the terms of the AGPLv3 or higher.
 
 from UM.Preferences import Preferences
@@ -49,12 +49,12 @@ class FirmwareUpdateCheckerJob(Job):
             # If it is not None, then we compare between the checked_version and the current_version
             # Now we just do that if the active printer is Ultimaker 3 or Ultimaker 3 Extended or any
             # other Ultimaker 3 that will come in the future
-            if (machine_name[0:11] == "Ultimaker 3"):
+            if machine_name[0:11] == "Ultimaker 3":
 
                 # Nothing to parse, just get the string
                 # TODO: In the future may be done by parsing a JSON file with diferent version for each printer model
                 current_version = reader(current_version_file).readline().rstrip()
-                Logger.log("i", "Reading firmware version of %s: %s" % (machine_name, current_version))
+                Logger.log("i", "Reading firmware version of %s: %s", machine_name, current_version)
 
                 # If it is the first time the version is checked, the checked_version is None
                 checked_version = Preferences.getInstance().getValue("info/latest_checked_firmware")
@@ -80,7 +80,7 @@ class FirmwareUpdateCheckerJob(Job):
                 Preferences.getInstance().setValue("info/latest_checked_firmware", current_version)
 
         except Exception as e:
-            Logger.log("w", "Failed to check for new version: %s" % e)
+            Logger.log("w", "Failed to check for new version: %s", e)
             if not self.silent:
                 Message(i18n_catalog.i18nc("@info", "Could not access update information.")).show()
-            return
\ No newline at end of file
+            return
diff --git a/plugins/FirmwareUpdateChecker/__init__.py b/plugins/FirmwareUpdateChecker/__init__.py
index 5da6130772..b7343dc565 100644
--- a/plugins/FirmwareUpdateChecker/__init__.py
+++ b/plugins/FirmwareUpdateChecker/__init__.py
@@ -1,14 +1,16 @@
-# Copyright (c) 2015 Ultimaker B.V.
+# Copyright (c) 2017 Ultimaker B.V.
 # Cura is released under the terms of the AGPLv3 or higher.
 
 from UM.i18n import i18nCatalog
+
 from . import FirmwareUpdateChecker
 
 i18n_catalog = i18nCatalog("cura")
 
+
 def getMetaData():
-    return {
-    }
+    return {}
+
 
 def register(app):
-    return { "extension": FirmwareUpdateChecker.FirmwareUpdateChecker()}
+    return {"extension": FirmwareUpdateChecker.FirmwareUpdateChecker()}