diff --git a/src/common/pep.py b/src/common/pep.py
index f5609dc4c..bf4cb15e6 100644
--- a/src/common/pep.py
+++ b/src/common/pep.py
@@ -169,7 +169,7 @@ def user_activity(items, name, jid):
 			contact.activity['text'] = text
 
 def user_send_mood(account, mood, message = ''):
-	if gajim.config.get('publish_mood') == False:
+	if not gajim.config.get('publish_mood'):
 		return
 	item = xmpp.Node('mood', {'xmlns': xmpp.NS_MOOD})
 	if mood != '':
@@ -181,7 +181,7 @@ def user_send_mood(account, mood, message = ''):
 	gajim.connections[account].send_pb_publish('', xmpp.NS_MOOD, item, '0')
 
 def user_send_activity(account, activity, subactivity = '', message = ''):
-	if gajim.config.get('publish_activity') == False:
+	if not gajim.config.get('publish_activity'):
 		return
 	item = xmpp.Node('activity', {'xmlns': xmpp.NS_ACTIVITY})
 	if activity != '':
@@ -195,8 +195,8 @@ def user_send_activity(account, activity, subactivity = '', message = ''):
 	gajim.connections[account].send_pb_publish('', xmpp.NS_ACTIVITY, item, '0')
 
 def user_send_tune(account, artist = '', title = '', source = '', track = 0,length = 0, items = None):
-	if (gajim.config.get('publish_tune') == False) or \
-	(gajim.connections[account].pep_supported == False):
+	if (not gajim.config.get('publish_tune')) or \
+	(not gajim.connections[account].pep_supported):
 		return
 	item = xmpp.Node('tune', {'xmlns': xmpp.NS_TUNE})
 	if artist != '':
diff --git a/src/common/zeroconf/zeroconf_bonjour.py b/src/common/zeroconf/zeroconf_bonjour.py
index 79d699ba4..884ef59ea 100644
--- a/src/common/zeroconf/zeroconf_bonjour.py
+++ b/src/common/zeroconf/zeroconf_bonjour.py
@@ -245,7 +245,7 @@ class Zeroconf:
 		return True
 
 	def remove_announce(self):
-		if self.announced == False:
+		if not self.announced:
 			return False
 		try:
 			self.service_sdRef.close()
diff --git a/src/config.py b/src/config.py
index c6796f0d8..71217c960 100644
--- a/src/config.py
+++ b/src/config.py
@@ -533,7 +533,7 @@ class PreferencesWindow:
 		gajim.interface.save_config()
 
 	def on_publish_mood_checkbutton_toggled(self, widget):
-		if widget.get_active() == False:
+		if not widget.get_active():
 			for account in gajim.connections:
 				if gajim.connections[account].pep_supported:
 					pep.user_send_mood(account, '')
@@ -541,7 +541,7 @@ class PreferencesWindow:
 		helpers.update_optional_features()
 
 	def on_publish_activity_checkbutton_toggled(self, widget):
-		if widget.get_active() == False:
+		if not widget.get_active():
 			for account in gajim.connections:
 				if gajim.connections[account].pep_supported:
 					pep.user_send_activity(account, '')
@@ -549,7 +549,7 @@ class PreferencesWindow:
 		helpers.update_optional_features()
 
 	def on_publish_tune_checkbutton_toggled(self, widget):
-		if widget.get_active() == False:
+		if not widget.get_active():
 			for account in gajim.connections:
 				if gajim.connections[account].pep_supported:
 					pep.user_send_tune(account, '')
diff --git a/src/roster_window.py b/src/roster_window.py
index 8abc1d605..b0f6b5dc8 100644
--- a/src/roster_window.py
+++ b/src/roster_window.py
@@ -5403,7 +5403,7 @@ class RosterWindow:
 			elif contacts_transport != transport:
 				contacts_transport = False
 
-		if contacts_transport == False:
+		if not contacts_transport:
 			# they are not all from the same transport
 			invite_menuitem.set_sensitive(False)
 			return