diff --git a/addons/account/account.py b/addons/account/account.py
index cd9fb5d2213..e3dd07fed42 100644
--- a/addons/account/account.py
+++ b/addons/account/account.py
@@ -1545,7 +1545,7 @@ class account_model_line(osv.osv):
 
         'ref': fields.char('Ref.', size=16),
 
-        'amount_currency': fields.float('Amount Currency', help="The amount expressed in an optionnal other currency."),
+        'amount_currency': fields.float('Amount Currency', help="The amount expressed in an optional other currency."),
         'currency_id': fields.many2one('res.currency', 'Currency'),
 
         'partner_id': fields.many2one('res.partner', 'Partner Ref.'),
diff --git a/addons/account/account_move_line.py b/addons/account/account_move_line.py
index 354f721db5a..46af2bd289a 100644
--- a/addons/account/account_move_line.py
+++ b/addons/account/account_move_line.py
@@ -348,8 +348,8 @@ class account_move_line(osv.osv):
         'statement_id': fields.many2one('account.bank.statement', 'Statement', help="The bank statement used for bank reconciliation", select=1),
         'reconcile_id': fields.many2one('account.move.reconcile', 'Reconcile', readonly=True, ondelete='set null', select=2),
         'reconcile_partial_id': fields.many2one('account.move.reconcile', 'Partial Reconcile', readonly=True, ondelete='set null', select=2),
-        'amount_currency': fields.float('Amount Currency', help="The amount expressed in an optionnal other currency if it is a multi-currency entry."),
-        'currency_id': fields.many2one('res.currency', 'Currency', help="The optionnal other currency if it is a multi-currency entry."),
+        'amount_currency': fields.float('Amount Currency', help="The amount expressed in an optional other currency if it is a multi-currency entry."),
+        'currency_id': fields.many2one('res.currency', 'Currency', help="The optional other currency if it is a multi-currency entry."),
 
         'period_id': fields.many2one('account.period', 'Period', required=True, select=2),
         'journal_id': fields.many2one('account.journal', 'Journal', required=True, select=1),
diff --git a/addons/base_contact/base_contact.py b/addons/base_contact/base_contact.py
index 21adff82f3d..f06fe81dfa7 100644
--- a/addons/base_contact/base_contact.py
+++ b/addons/base_contact/base_contact.py
@@ -124,7 +124,7 @@ class res_partner_job(osv.osv):
         'phone': fields.char('Phone', size=64),
         'fax': fields.char('Fax', size=64),
         'extension': fields.char('Extension', size=64, help='Internal/External extension phone number'),
-        'other': fields.char('Other', size=64, help='Additionnal phone field'),
+        'other': fields.char('Other', size=64, help='Additional phone field'),
         'date_start' : fields.date('Date Start'),
         'date_stop' : fields.date('Date Stop'),
         'state' : fields.selection([('past', 'Past'),('current', 'Current')], 'State', required=True),
diff --git a/addons/crm/crm_segmentation.py b/addons/crm/crm_segmentation.py
index a9e410fbcb1..0ded3cda606 100644
--- a/addons/crm/crm_segmentation.py
+++ b/addons/crm/crm_segmentation.py
@@ -40,7 +40,7 @@ class crm_segmentation(osv.osv):
         'state': fields.selection([('not running','Not Running'),('running','Running')], 'Execution Status', readonly=True),
         'partner_id': fields.integer('Max Partner ID processed'),
         'segmentation_line': fields.one2many('crm.segmentation.line', 'segmentation_id', 'Criteria', required=True),
-        'som_interval': fields.integer('Days per Periode', help="A period is the average number of days between two cycle of sale or purchase for this segmentation. It's mainly used to detect if a partner has not purchased or buy for a too long time, so we suppose that his state of mind has decreased because he probably bought goods to another supplier. Use this functionnality for recurring businesses."),
+        'som_interval': fields.integer('Days per Periode', help="A period is the average number of days between two cycle of sale or purchase for this segmentation. It's mainly used to detect if a partner has not purchased or buy for a too long time, so we suppose that his state of mind has decreased because he probably bought goods to another supplier. Use this functionality for recurring businesses."),
         'som_interval_max': fields.integer('Max Interval', help="The computation is made on all events that occured during this interval, the past X periods."),
         'som_interval_decrease': fields.float('Decrease (0>1)', help="If the partner has not purchased (or buied) during a period, decrease the state of mind by this factor. It\'s a multiplication"),
         'som_interval_default': fields.float('Default (0=None)', help="Default state of mind for period preceeding the 'Max Interval' computation. This is the starting state of mind by default if the partner has no event."),
@@ -102,7 +102,7 @@ class crm_segmentation_line(osv.osv):
         'expr_name': fields.selection([('sale','Sale Amount'),('som','State of Mind'),('purchase','Purchase Amount')], 'Control Variable', size=64, required=True),
         'expr_operator': fields.selection([('<','<'),('=','='),('>','>')], 'Operator', required=True),
         'expr_value': fields.float('Value', required=True),
-        'operator': fields.selection([('and','Mandatory Expression'),('or','Optional Expression')],'Mandatory / Optionnal', required=True),
+        'operator': fields.selection([('and','Mandatory Expression'),('or','Optional Expression')],'Mandatory / Optional', required=True),
     }
     _defaults = {
         'expr_name': lambda *a: 'sale',