diff --git a/prospect_trace.py b/prospect_trace.py
index 12675f5..0ed394c 100644
--- a/prospect_trace.py
+++ b/prospect_trace.py
@@ -57,8 +57,11 @@ class ProspectTrace(DeactivableMixin, ModelSQL, ModelView):
         cls._buttons.update({
             'wizard_schedule': {
                 'invisible': Eval('state') == 'with_pending_calls',
-                },
-            'wizard_make_call': {}
+            },
+            'wizard_make_call': {},
+            'close_trace': {
+                'invisible': Eval('state') == 'closed'
+            }
         })
 
     @classmethod
@@ -77,6 +80,13 @@ class ProspectTrace(DeactivableMixin, ModelSQL, ModelView):
     def wizard_make_call(cls, prospect_traces):
         pass
 
+    @classmethod
+    @ModelView.button
+    def close_trace(cls, prospect_traces):
+        for prospect_trace in prospect_traces:
+            prospect_trace.state = 'closed'
+            prospect_trace.save()
+
     def get_rec_name(self, name):
         if self.prospect:
             return '[' + str(self.id) + '] ' + self.prospect.name
diff --git a/prospect_trace.xml b/prospect_trace.xml
index 8115643..c130103 100644
--- a/prospect_trace.xml
+++ b/prospect_trace.xml
@@ -90,5 +90,10 @@ this repository contains the full copyright notices and license terms. -->
             <field name="model" search="[('model', '=', 'sale.prospect_trace')]"/>
         </record>
 
+        <record model="ir.model.button" id="close_trace_button">
+            <field name="name">close_trace</field>
+            <field name="string">Close trace</field>
+            <field name="model" search="[('model', '=', 'sale.prospect_trace')]"/>
+        </record>
     </data>
 </tryton>
\ No newline at end of file
diff --git a/tests/scenario_sale_opportunity_management.rst b/tests/scenario_sale_opportunity_management.rst
index cab4062..869b0ba 100644
--- a/tests/scenario_sale_opportunity_management.rst
+++ b/tests/scenario_sale_opportunity_management.rst
@@ -257,7 +257,7 @@ Programar una próxima llamada pendiente al seguimiento de prospecto::
 Crear una llamada agendada previamente::
     >>> make_call = Wizard('sale.prospect_trace.make_call', [prospect_trace])
     >>> make_call.form.description = 'Fourth call to the prospect'
-    >>> make_call.form.interest = '4'
+    >>> make_call.form.interest = '2'
     >>> make_call.execute('make_call')
 
     >>> prospect_trace.pending_call
@@ -265,6 +265,15 @@ Crear una llamada agendada previamente::
     >>> prospect_trace.state
     'open'
 
+Hacer llamada y cerrar venta (Seguimiento de prospecto)::
+    >>> make_call = Wizard('sale.prospect_trace.make_call', [prospect_trace])
+    >>> make_call.form.description = 'Closed sale'
+    >>> make_call.form.interest = '4'
+    >>> make_call.execute('make_call')
+    >>> prospect_trace.click('close_trace')
+
+    >>> prospect_trace.state
+    'closed'
 
 Reasignar prospectos por operador::
     >>> operator2 = User();