diff --git a/app/receiver.py b/app/receiver.py
index 9924cbdb..58dc76fd 100644
--- a/app/receiver.py
+++ b/app/receiver.py
@@ -66,7 +66,7 @@ class _FeaturesArray(object):
 			raise IndexError
 
 		if self.features[index] is None:
-			# print "features getitem at %d" % index
+			# print ("features getitem at %d" % index)
 			fs_index = self.features.index(_api.FEATURE.FEATURE_SET)
 			# technically fs_function is 0x10 for this call, but we add the index to differentiate possibly conflicting requests
 			fs_function = 0x10 | (index & 0x0F)
@@ -81,7 +81,7 @@ class _FeaturesArray(object):
 			if value in self.features:
 				return True
 
-			# print "features contains %s" % repr(value)
+			# print ("features contains %s" % repr(value))
 			for index in range(0, len(self.features)):
 				f = self.features[index] or self.__getitem__(index)
 				assert f is not None
diff --git a/app/solaar.py b/app/solaar.py
index dda53d52..f9167337 100644
--- a/app/solaar.py
+++ b/app/solaar.py
@@ -62,12 +62,12 @@ def _check_requirements():
 
 
 if __name__ == '__main__':
-	args = _parse_arguments()
-
 	req_fail = _check_requirements()
 	if req_fail:
 		raise ImportError('missing required package: %s' % req_fail)
 
+	args = _parse_arguments()
+
 	import ui
 
 	# check if the notifications are available and enabled
diff --git a/app/ui/main_window.py b/app/ui/main_window.py
index 6e40ead4..532be721 100644
--- a/app/ui/main_window.py
+++ b/app/ui/main_window.py
@@ -257,7 +257,7 @@ def _update_receiver_box(frame, receiver):
 
 def _update_device_box(frame, dev):
 	frame._device = dev
-	# print dev.name, dev.kind
+	# print (dev.name, dev.kind)
 
 	icon, label, info_label = ui.find_children(frame, 'icon', 'label', 'info-label')
 
diff --git a/lib/logitech/unifying_receiver/api.py b/lib/logitech/unifying_receiver/api.py
index 2b2f97f6..2bc0db2c 100644
--- a/lib/logitech/unifying_receiver/api.py
+++ b/lib/logitech/unifying_receiver/api.py
@@ -245,7 +245,7 @@ class Receiver(object):
 		return 0 if count is None else ord(count[1:2])
 
 	def __contains__(self, dev):
-		# print self, "contains", dev
+		# print (self, "contains", dev)
 		if self.handle == 0:
 			return False
 		if type(dev) == int:
diff --git a/lib/logitech/unifying_receiver/listener.py b/lib/logitech/unifying_receiver/listener.py
index 21d16330..b17ae1b4 100644
--- a/lib/logitech/unifying_receiver/listener.py
+++ b/lib/logitech/unifying_receiver/listener.py
@@ -7,7 +7,6 @@ import threading as _threading
 from . import base as _base
 from .exceptions import NoReceiver as _NoReceiver
 from .common import Packet as _Packet
-from .constants import MAX_ATTACHED_DEVICES as _MAX_ATTACHED_DEVICES
 
 # for both Python 2 and 3
 try:
@@ -27,7 +26,7 @@ class EventsListener(_threading.Thread):
 	Incoming packets will be passed to the callback function in sequence.
 	"""
 	def __init__(self, receiver_handle, events_callback):
-		super(EventsListener, self).__init__(group='Unifying Receiver', name=self.__class__.__name__)
+		super(EventsListener, self).__init__(name=self.__class__.__name__)
 
 		self.daemon = True
 		self._active = False