diff --git a/src/chat_control.py b/src/chat_control.py
index f41dbd266..3b6d809eb 100644
--- a/src/chat_control.py
+++ b/src/chat_control.py
@@ -1494,7 +1494,7 @@ class ChatControl(ChatControlBase):
 			# 2 seconds
 			dialog = dialogs.ConfirmationDialog(
 				#%s is being replaced in the code with JID
-				_('You just received a new message from "%s"' % self.contact.jid),
+				_('You just received a new message from "%s"') % self.contact.jid,
 				_('If you close this tab and you have history disabled, '\
 				'this message will be lost.'))
 			if dialog.get_response() != gtk.RESPONSE_OK:
diff --git a/src/common/connection_handlers.py b/src/common/connection_handlers.py
index 1b2356e8d..056eb9406 100644
--- a/src/common/connection_handlers.py
+++ b/src/common/connection_handlers.py
@@ -585,8 +585,8 @@ class ConnectionDisco:
 		iq.setID(id)
 		# Wait the answer during 30 secondes
 		self.awaiting_timeouts[gajim.idlequeue.current_time() + 30] = (id,
-			_('Registration information for transport %s has not arrived in time' % \
-			agent))
+			_('Registration information for transport %s has not arrived in time') % \
+			agent)
 		self.connection.SendAndCallForResponse(iq, self._ReceivedRegInfo,
 			{'agent': agent})
 	
diff --git a/src/config.py b/src/config.py
index 150043f66..c5a73ba60 100644
--- a/src/config.py
+++ b/src/config.py
@@ -1976,9 +1976,9 @@ class ServiceRegistrationWindow(DataFormWindow):
 			self.window = self.xml.get_widget('service_registration_window')
 			self.window.set_transient_for(gajim.interface.roster.window)
 			if infos.has_key('registered'):
-				self.window.set_title(_('Edit %s' % service))
+				self.window.set_title(_('Edit %s') % service)
 			else:
-				self.window.set_title(_('Register to %s' % service))
+				self.window.set_title(_('Register to %s') % service)
 			self.xml.get_widget('label').set_text(infos['instructions'])
 			self.entries = {}
 			self.draw_table()
@@ -2272,7 +2272,7 @@ class RemoveAccountWindow:
 		self.dialog = None
 		if gajim.connections[self.account].connected:
 			self.dialog = dialogs.ConfirmationDialog(
-				_('Account "%s" is connected to the server' % self.account),
+				_('Account "%s" is connected to the server') % self.account,
 				_('If you remove it, the connection will be lost.'),
 				on_response_ok = remove)
 		else:
diff --git a/src/dialogs.py b/src/dialogs.py
index d067aac43..896d73627 100644
--- a/src/dialogs.py
+++ b/src/dialogs.py
@@ -851,7 +851,7 @@ class FileChooserDialog(gtk.FileChooserDialog):
 
 class BindPortError(HigDialog):
 	def __init__(self, port):
-		ErrorDialog(_('Unable to bind to port %s.' % port),
+		ErrorDialog(_('Unable to bind to port %s.') % port,
 			_('Maybe you have another running instance of Gajim. '
 			'File Transfer will be canceled.'))
 
@@ -1206,7 +1206,7 @@ class NewChatDialog(InputDialog):
 		if gajim.connections[self.account].connected <= 1:
 			#if offline or connecting
 			ErrorDialog(_('Connection not available'),
-		_('Please make sure you are connected with "%s".' % self.account))
+		_('Please make sure you are connected with "%s".') % self.account)
 			return
 
 		if self.completion_dict.has_key(jid):
@@ -1218,7 +1218,7 @@ class NewChatDialog(InputDialog):
 				ErrorDialog(_('Invalid JID'), e[0])
 				return
 			except:
-				ErrorDialog(_('Invalid JID'), _('Unable to parse "%s".' % jid))
+				ErrorDialog(_('Invalid JID'), _('Unable to parse "%s".') % jid)
 				return
 		gajim.interface.roster.new_chat_from_jid(self.account, jid)
 
@@ -1560,7 +1560,7 @@ class SingleMessageWindow:
 		if gajim.connections[self.account].connected <= 1:
 			# if offline or connecting
 			ErrorDialog(_('Connection not available'),
-		_('Please make sure you are connected with "%s".' % self.account))
+		_('Please make sure you are connected with "%s".') % self.account)
 			return
 		to_whom_jid = self.to_entry.get_text().decode('utf-8')
 		if self.completion_dict.has_key(to_whom_jid):
@@ -1587,7 +1587,7 @@ class SingleMessageWindow:
 	def on_reply_button_clicked(self, widget):
 		# we create a new blank window to send and we preset RE: and to jid
 		self.subject = _('RE: %s') % self.subject
-		self.message = _('%s wrote:\n' % self.from_whom) + self.message
+		self.message = _('%s wrote:\n') % self.from_whom + self.message
 		# add > at the begining of each line
 		self.message = self.message.replace('\n', '\n> ') + '\n\n'
 		self.window.destroy()
@@ -1684,7 +1684,7 @@ class XMLConsoleWindow:
 		if gajim.connections[self.account].connected <= 1:
 			#if offline or connecting
 			ErrorDialog(_('Connection not available'),
-		_('Please make sure you are connected with "%s".' % self.account))
+		_('Please make sure you are connected with "%s".') % self.account)
 			return
 		begin_iter, end_iter = self.input_tv_buffer.get_bounds()
 		stanza = self.input_tv_buffer.get_text(begin_iter, end_iter).decode('utf-8')
diff --git a/src/filetransfers_window.py b/src/filetransfers_window.py
index 29b247711..fc6a3cf25 100644
--- a/src/filetransfers_window.py
+++ b/src/filetransfers_window.py
@@ -328,7 +328,7 @@ _('Connection with peer cannot be established.'))
 				else:
 					dirname = os.path.dirname(file_path)
 					if not os.access(dirname, os.W_OK):
-						dialogs.ErrorDialog(_('Directory "%s" is not writable' % dirname), _('You do not have permission to create files in this directory.'))
+						dialogs.ErrorDialog(_('Directory "%s" is not writable') % dirname, _('You do not have permission to create files in this directory.'))
 						return
 				dialog2.destroy()
 				self._start_receive(file_path, account, contact, file_props)
diff --git a/src/gajim.py b/src/gajim.py
index a01a6ee89..959f266df 100755
--- a/src/gajim.py
+++ b/src/gajim.py
@@ -723,8 +723,8 @@ class Interface:
 			config.ServiceRegistrationWindow(array[0], array[1], account,
 				array[2])
 		else:
-			dialogs.ErrorDialog(_('Contact with "%s" cannot be established'\
-% array[0]), _('Check your connection or try again later.'))
+			dialogs.ErrorDialog(_('Contact with "%s" cannot be established')\
+% array[0], _('Check your connection or try again later.'))
 
 	def handle_event_agent_info_items(self, account, array):
 		#('AGENT_INFO_ITEMS', account, (agent, node, items))
diff --git a/src/history_manager.py b/src/history_manager.py
index 5fe8288be..21d74491f 100755
--- a/src/history_manager.py
+++ b/src/history_manager.py
@@ -464,8 +464,8 @@ class HistoryManager:
 			except ValueError:
 				pass
 
-			file_.write(_('%(who)s on %(time)s said: %(message)s\n' % {'who': who,
-				'time': time_, 'message': message}))
+			file_.write(_('%(who)s on %(time)s said: %(message)s\n') % {'who': who,
+				'time': time_, 'message': message})
 	
 	def _delete_jid_logs(self, liststore, list_of_paths):
 		paths_len = len(list_of_paths)