diff --git a/gajim/chat_control.py b/gajim/chat_control.py
index 441658135..b033ea0df 100644
--- a/gajim/chat_control.py
+++ b/gajim/chat_control.py
@@ -1428,7 +1428,7 @@ class ChatControl(ChatControlBase):
             typ = 'pm'
 
         self.redraw_after_event_removed(jid)
-        if (self.contact.show in ('offline', 'error')):
+        if self.contact.show in ('offline', 'error'):
             show_offline = app.config.get('showoffline')
             show_transports = app.config.get('show_transports_group')
             if (not show_transports and app.jid_is_transport(jid)) or \
diff --git a/gajim/common/helpers.py b/gajim/common/helpers.py
index 042a08ff1..7c60fce6d 100644
--- a/gajim/common/helpers.py
+++ b/gajim/common/helpers.py
@@ -1075,7 +1075,7 @@ def get_notification_icon_tooltip_text():
     for account in accounts:
         account_name = account['name']
         # Set account status, if not set above
-        if (show_more_accounts):
+        if show_more_accounts:
             message = '\n' + indent_with + ' %s - %s'
             text += message % (account_name, get_account_status(account))
             # Account list shown, messages need to be indented more
diff --git a/gajim/common/resolver.py b/gajim/common/resolver.py
index f1cb93f56..95e95d892 100644
--- a/gajim/common/resolver.py
+++ b/gajim/common/resolver.py
@@ -67,7 +67,7 @@ class CommonResolver():
         if host + type_ in self.handlers:
             for callback in self.handlers[host + type_]:
                 callback(host, result_list)
-            del(self.handlers[host + type_])
+            del self.handlers[host + type_]
 
     def start_resolve(self, host, type_):
         pass
diff --git a/gajim/common/socks5.py b/gajim/common/socks5.py
index 0063e49b1..93ddc7108 100644
--- a/gajim/common/socks5.py
+++ b/gajim/common/socks5.py
@@ -390,7 +390,7 @@ class SocksQueue:
         else:
             if reader.streamhost is not None:
                 reader.streamhost['state'] = -1
-        del(self.readers[key])
+        del self.readers[key]
 
     def remove_sender_by_key(self, key, do_disconnect=True):
         sender = self.senders[key]
@@ -398,7 +398,7 @@ class SocksQueue:
             sender.disconnect()
         self.idlequeue.unplug_idle(sender.fd)
         self.idlequeue.remove_timeout(sender.fd)
-        del(self.senders[key])
+        del self.senders[key]
         if self.connected > 0:
             self.connected -= 1
 
diff --git a/gajim/common/zeroconf/client_zeroconf.py b/gajim/common/zeroconf/client_zeroconf.py
index bc73b4821..6adad3c62 100644
--- a/gajim/common/zeroconf/client_zeroconf.py
+++ b/gajim/common/zeroconf/client_zeroconf.py
@@ -105,7 +105,7 @@ class ZeroconfListener(IdleObject):
         for jid in self.conn_holder.getRoster().keys():
             entry = self.conn_holder.getRoster().getItem(jid)
             for address in entry['addresses']:
-                if (address['address'] == ipaddr):
+                if address['address'] == ipaddr:
                     from_jid = jid
                     break
         P2PClient(sock[0], [{'host': ipaddr, 'address': ipaddr, 'port': sock[1][1]}], self.conn_holder, [], from_jid)
diff --git a/gajim/common/zeroconf/zeroconf_bonjour.py b/gajim/common/zeroconf/zeroconf_bonjour.py
index ff39d5729..3057fee45 100644
--- a/gajim/common/zeroconf/zeroconf_bonjour.py
+++ b/gajim/common/zeroconf/zeroconf_bonjour.py
@@ -66,7 +66,7 @@ class Zeroconf:
         if errorCode != pybonjour.kDNSServiceErr_NoError:
             log.debug('Error in browse_callback: %s', str(errorCode))
             return
-        if not (flags & pybonjour.kDNSServiceFlagsAdd):
+        if not flags & pybonjour.kDNSServiceFlagsAdd:
             self.remove_service_callback(serviceName)
             return
 
diff --git a/gajim/config.py b/gajim/config.py
index c72f1e166..2e8e269bc 100644
--- a/gajim/config.py
+++ b/gajim/config.py
@@ -109,7 +109,7 @@ class ManageProxiesWindow:
         model = self.proxies_treeview.get_model()
         proxies = app.config.get_per('proxies')
         i = 1
-        while ('proxy' + str(i)) in proxies:
+        while 'proxy' + str(i) in proxies:
             i += 1
         iter_ = model.append()
         model.set(iter_, 0, 'proxy' + str(i))
diff --git a/gajim/dialogs.py b/gajim/dialogs.py
index 3ffc969db..e98cfe14b 100644
--- a/gajim/dialogs.py
+++ b/gajim/dialogs.py
@@ -751,8 +751,8 @@ class ChangeStatusMessageDialog(TimeoutDialog):
     def on_change_status_message_dialog_key_press_event(self, widget, event):
         self.countdown_enabled = False
         if event.keyval == Gdk.KEY_Return or \
-           event.keyval == Gdk.KEY_KP_Enter: # catch CTRL+ENTER
-            if (event.get_state() & Gdk.ModifierType.CONTROL_MASK):
+           event.keyval == Gdk.KEY_KP_Enter:  # catch CTRL+ENTER
+            if event.get_state() & Gdk.ModifierType.CONTROL_MASK:
                 self.dialog.response(Gtk.ResponseType.OK)
                 # Stop the event
                 return True
diff --git a/gajim/filetransfers_window.py b/gajim/filetransfers_window.py
index 739fe2e55..33e2480d8 100644
--- a/gajim/filetransfers_window.py
+++ b/gajim/filetransfers_window.py
@@ -577,7 +577,7 @@ class FileTransfersWindow:
                         app.interface.roster.draw_contact(jid, account)
                         app.interface.roster.show_title()
         FilesProp.deleteFileProp(file_props)
-        del(file_props)
+        del file_props
 
     def set_progress(self, typ, sid, transfered_size, iter_=None):
         """
diff --git a/gajim/gajim_remote.py b/gajim/gajim_remote.py
index c2ae86c5f..c9c38d62b 100644
--- a/gajim/gajim_remote.py
+++ b/gajim/gajim_remote.py
@@ -436,7 +436,7 @@ class GajimRemote:
                     res = self.print_info(level+1, val)
                     if res != '':
                         ret_str += '%s%s: \n%s' % (spacing, key, res)
-        if (encode_return):
+        if encode_return:
             try:
                 ret_str = ret_str.encode(PREFERRED_ENCODING)
             except Exception:
diff --git a/gajim/groupchat_control.py b/gajim/groupchat_control.py
index 3a9e9386b..41904ec24 100644
--- a/gajim/groupchat_control.py
+++ b/gajim/groupchat_control.py
@@ -1474,7 +1474,7 @@ class GroupchatControl(ChatControlBase):
 
         for special_word in special_words:
             found_here = text.find(special_word)
-            while(found_here > -1):
+            while found_here > -1:
                 end_here = found_here + len(special_word)
                 if (found_here == 0 or not text[found_here - 1].isalpha()) and \
                 (end_here == len(text) or not text[end_here].isalpha()):
@@ -2783,7 +2783,7 @@ class GroupchatControl(ChatControlBase):
         is set this way)
         """
         if path.get_depth() == 1: # It's a group
-            if (widget.row_expanded(path)):
+            if widget.row_expanded(path):
                 widget.collapse_row(path)
             else:
                 widget.expand_row(path, False)
@@ -2834,7 +2834,7 @@ class GroupchatControl(ChatControlBase):
                 self.room_jid):
                     # it's a group
                     if x < 27:
-                        if (widget.row_expanded(path)):
+                        if widget.row_expanded(path):
                             widget.collapse_row(path)
                         else:
                             widget.expand_row(path, False)
diff --git a/gajim/gtk/emoji_data.py b/gajim/gtk/emoji_data.py
index 9dcf6ca43..a88d70d7a 100644
--- a/gajim/gtk/emoji_data.py
+++ b/gajim/gtk/emoji_data.py
@@ -145,7 +145,7 @@ class EmojiAsciiData(dict):
             # escape regexp metachars
             emoticon_escaped = re.escape(emoticon)
             emoticons_pattern += emoticon_escaped + '|'
-            if (emoticon_length != len(emoticon)):
+            if emoticon_length != len(emoticon):
                 # Build up expressions to match emoticons next to others
                 pre_pattern = pre_pattern[:-1] + ')|(?<='
                 post_pattern = post_pattern[:-1] + ')|(?='
diff --git a/gajim/gtk/history.py b/gajim/gtk/history.py
index 3ee9e9346..92d4ece7b 100644
--- a/gajim/gtk/history.py
+++ b/gajim/gtk/history.py
@@ -412,7 +412,7 @@ class HistoryWindow:
         log = time.localtime(timestamp)
         y, m, d = log[0], log[1], log[2]
         date = datetime.datetime(y, m, d)
-        return(date)
+        return date
 
     def _change_date(self, widget):
         # Get day selected in calendar
diff --git a/gajim/gtkgui_helpers.py b/gajim/gtkgui_helpers.py
index 9e5f57a1e..ccffe3fde 100644
--- a/gajim/gtkgui_helpers.py
+++ b/gajim/gtkgui_helpers.py
@@ -732,7 +732,7 @@ def make_jabber_state_images():
     app.interface.jabber_state_images['32'] = load_iconset(path)
 
     path = os.path.join(helpers.get_iconset_path(iconset), '24x24')
-    if (os.path.exists(path)):
+    if os.path.exists(path):
         app.interface.jabber_state_images['24'] = load_iconset(path)
     else:
         # Resize 32x32 icons to 24x24
diff --git a/gajim/gui_interface.py b/gajim/gui_interface.py
index 35dce97af..5b4517c67 100644
--- a/gajim/gui_interface.py
+++ b/gajim/gui_interface.py
@@ -358,7 +358,7 @@ class Interface:
             elif (obj.errcode == '404') or (obj.errcon in ('item-not-found',
             'remote-server-not-found')):
                 # remote server does not exist
-                if (obj.errcon == 'remote-server-not-found'):
+                if obj.errcon == 'remote-server-not-found':
                     self.handle_gc_error(gc_control, _('Unable to join group chat'),
                     _('Remote server <b>%s</b> does not exist.') % obj.room_jid)
                 # group chat does not exist
diff --git a/gajim/htmltextview.py b/gajim/htmltextview.py
index ab5530c51..05db049ad 100644
--- a/gajim/htmltextview.py
+++ b/gajim/htmltextview.py
@@ -1063,7 +1063,7 @@ class HtmlTextView(Gtk.TextView):
         if bounds:
             (search_iter, end) = bounds
 
-            while (search_iter.compare(end)):
+            while search_iter.compare(end):
                 character = search_iter.get_char()
                 if character == '\ufffc':
                     anchor = search_iter.get_child_anchor()
diff --git a/gajim/message_window.py b/gajim/message_window.py
index 7bfd3b72c..05cfc6687 100644
--- a/gajim/message_window.py
+++ b/gajim/message_window.py
@@ -722,7 +722,7 @@ class MessageWindow:
             return self._widget_to_control(nth_child)
 
     def has_control(self, jid, acct):
-        return (acct in self._controls and jid in self._controls[acct])
+        return acct in self._controls and jid in self._controls[acct]
 
     def change_key(self, old_jid, new_jid, acct):
         """
diff --git a/gajim/roster_window.py b/gajim/roster_window.py
index c3737b39d..e715e4300 100644
--- a/gajim/roster_window.py
+++ b/gajim/roster_window.py
@@ -1149,7 +1149,7 @@ class RosterWindow:
         # Hide group if no more contacts
         iterG = self._get_group_iter(group, account, model=self.modelfilter)
         to_hide = []
-        while(iterG):
+        while iterG:
             parent = self.modelfilter.iter_parent(iterG)
             if (not self.modelfilter.iter_has_child(iterG)) or (to_hide \
             and self.modelfilter.iter_n_children(iterG) == 1):
@@ -3220,8 +3220,9 @@ class RosterWindow:
             elif type_ == 'agent':
                 self.on_remove_agent(widget, list_)
 
-        elif not (event.get_state() & (Gdk.ModifierType.CONTROL_MASK | \
-        Gdk.ModifierType.MOD1_MASK)):
+        elif not (event.get_state() &
+                  (Gdk.ModifierType.CONTROL_MASK |
+                   Gdk.ModifierType.MOD1_MASK)):
             num = Gdk.keyval_to_unicode(event.keyval)
             if num and num > 31:
                 # if we got unicode symbol without ctrl / alt
@@ -3362,7 +3363,7 @@ class RosterWindow:
                 titer = model.get_iter(path)
                 if x > x_min and x < x_min + 27 and type_ == 'contact' and \
                 model.iter_has_child(titer):
-                    if (self.tree.row_expanded(path)):
+                    if self.tree.row_expanded(path):
                         self.tree.collapse_row(path)
                     else:
                         self.tree.expand_row(path, False)
@@ -3375,13 +3376,13 @@ class RosterWindow:
             else:
                 if type_ == 'group' and x < 27:
                     # first cell in 1st column (the arrow SINGLE clicked)
-                    if (self.tree.row_expanded(path)):
+                    if self.tree.row_expanded(path):
                         self.tree.collapse_row(path)
                     else:
                         self.expand_group_row(path)
 
                 elif type_ == 'contact' and x > x_min and x < x_min + 27:
-                    if (self.tree.row_expanded(path)):
+                    if self.tree.row_expanded(path):
                         self.tree.collapse_row(path)
                     else:
                         self.tree.expand_row(path, False)