diff --git a/complaint.py b/complaint.py
index a0aa611670..e876028b8c 100644
--- a/complaint.py
+++ b/complaint.py
@@ -12,6 +12,7 @@ from trytond.pyson import Eval, If, Bool
 from trytond.pool import Pool
 from trytond.transaction import Transaction
 
+from trytond.modules.currency.fields import Monetary
 from trytond.modules.product import price_digits
 
 
@@ -400,19 +401,17 @@ class Action(ModelSQL, ModelView):
         'on_change_with_unit')
     unit_digits = fields.Function(
         fields.Integer('Unit Digits'), 'on_change_with_unit_digits')
-    unit_price = fields.Numeric('Unit Price', digits=price_digits,
+    unit_price = Monetary(
+        "Unit Price", currency='currency', digits=price_digits,
         states=_line_states, depends=_line_depends,
         help='Leave empty for the same price.')
 
-    amount = fields.Function(fields.Numeric(
-            "Amount", digits=(16, Eval('currency_digits', 2)),
-            depends=['currency_digits']),
+    amount = fields.Function(Monetary(
+            "Amount", 'currency', digits='currency'),
         'on_change_with_amount')
     currency = fields.Function(fields.Many2One(
             'currency.currency', "Currency"),
         'on_change_with_currency')
-    currency_digits = fields.Function(fields.Integer("Currency Digits"),
-        'on_change_with_currency_digits')
 
     result = fields.Reference('Result', selection='get_result', readonly=True)
 
@@ -488,16 +487,6 @@ class Action(ModelSQL, ModelView):
                     'account.invoice', 'account.invoice.line'}):
             return self.complaint.origin.currency.id
 
-    @fields.depends(
-        'complaint',
-        '_parent_complaint.origin_model', '_parent_complaint.origin')
-    def on_change_with_currency_digits(self, name=None):
-        if (self.complaint
-                and self.complaint.origin_model in {
-                    'sale.sale', 'sale.line',
-                    'account.invoice', 'account.invoice.line'}):
-            return self.complaint.origin.currency.digits
-
     @classmethod
     def get_complaint_states(cls):
         pool = Pool()
@@ -658,19 +647,17 @@ class _Action_Line:
         fields.Many2One('product.uom', "Unit"), 'on_change_with_unit')
     unit_digits = fields.Function(
         fields.Integer("Unit Digits"), 'on_change_with_unit_digits')
-    unit_price = fields.Numeric(
-        "Unit Price", digits=price_digits, states=_states, depends=_depends,
+    unit_price = Monetary(
+        "Unit Price", currency='currency', digits=price_digits,
+        states=_states, depends=_depends,
         help='Leave empty for the same price.')
 
-    amount = fields.Function(fields.Numeric(
-            "Amount", digits=(16, Eval('currency_digits', 2)),
-            depends=['currency_digits']),
+    amount = fields.Function(Monetary(
+            "Amount", currency='currency', digits='currency'),
         'on_change_with_amount')
     currency = fields.Function(fields.Many2One(
             'currency.currency', "Currency"),
         'on_change_with_currency')
-    currency_digits = fields.Function(fields.Integer("Currency Digits"),
-        'on_change_with_currency_digits')
 
     complaint_state = fields.Function(
         fields.Selection('get_complaint_states', "Complaint State"),
@@ -710,11 +697,6 @@ class _Action_Line:
         if self.action and self.action.currency:
             return self.action.currency.id
 
-    @fields.depends('action', '_parent_action.currency')
-    def on_change_with_currency_digits(self, name=None):
-        if self.action and self.action.currency:
-            return self.action.currency.digits
-
     @classmethod
     def get_complaint_states(cls):
         pool = Pool()
diff --git a/view/action_form.xml b/view/action_form.xml
index d22504cb61..774f2c479a 100644
--- a/view/action_form.xml
+++ b/view/action_form.xml
@@ -17,7 +17,7 @@ this repository contains the full copyright notices and license terms. -->
     <label name="quantity"/>
     <field name="quantity" symbol="unit"/>
     <label name="unit_price"/>
-    <field name="unit_price" symbol="currency"/>
+    <field name="unit_price"/>
     <label name="amount"/>
-    <field name="amount" symbol="currency"/>
+    <field name="amount"/>
 </form>
diff --git a/view/action_line_form.xml b/view/action_line_form.xml
index 91ac13ab43..e3179c3cd4 100644
--- a/view/action_line_form.xml
+++ b/view/action_line_form.xml
@@ -11,6 +11,6 @@ this repository contains the full copyright notices and license terms. -->
     <label name="quantity"/>
     <field name="quantity" symbol="unit"/>
     <label name="unit_price"/>
-    <field name="unit_price" symbol="currency"/>
-    <field name="amount" symbol="currency"/>
+    <field name="unit_price"/>
+    <field name="amount"/>
 </form>
diff --git a/view/action_line_list.xml b/view/action_line_list.xml
index 8ab6709149..e3eba3775d 100644
--- a/view/action_line_list.xml
+++ b/view/action_line_list.xml
@@ -5,6 +5,6 @@ this repository contains the full copyright notices and license terms. -->
     <field name="line"/>
     <field name="action"/>
     <field name="quantity" symbol="unit"/>
-    <field name="unit_price" symbol="currency"/>
-    <field name="amount" symbol="currency"/>
+    <field name="unit_price"/>
+    <field name="amount"/>
 </tree>
diff --git a/view/action_list.xml b/view/action_list.xml
index 8d40cf1f7d..32628f7a87 100644
--- a/view/action_list.xml
+++ b/view/action_list.xml
@@ -4,6 +4,6 @@ this repository contains the full copyright notices and license terms. -->
 <tree>
     <field name="complaint" expand="1"/>
     <field name="action" expand="1"/>
-    <field name="amount" symbol="currency" sum="Amount"/>
+    <field name="amount" sum="Amount"/>
     <field name="result"/>
 </tree>