diff --git a/prospect_trace.py b/prospect_trace.py
index 4189c5d..a2f1088 100644
--- a/prospect_trace.py
+++ b/prospect_trace.py
@@ -1,13 +1,13 @@
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
-from trytond.model import ModelSQL, ModelView, fields
+from trytond.model import ModelSQL, ModelView, fields, DeactivableMixin
 from trytond.pool import Pool
 
 from .selections.call_types import CallTypes
 from .selections.interest import Interest
 
 
-class ProspectTrace(ModelSQL, ModelView):
+class ProspectTrace(DeactivableMixin, ModelSQL, ModelView):
     'Seguimiento de un prospecto'
     __name__ = 'sale.prospect_trace'
 
@@ -47,7 +47,7 @@ class ProspectTrace(ModelSQL, ModelView):
 
     @fields.depends('pending_calls', 'state')
     def on_change_pending_calls(self):
-        if len(self.pending_calls) > 0:
+        if len(self.pending_calls) >= 1:
             self.state = 'with_pending_calls'
 
     @fields.depends('prospect')
diff --git a/view/prospect_trace_form.xml b/view/prospect_trace_form.xml
index bf255d4..b36fc4b 100644
--- a/view/prospect_trace_form.xml
+++ b/view/prospect_trace_form.xml
@@ -2,6 +2,9 @@
 <!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
 this repository contains the full copyright notices and license terms. -->
 <form>
+    <label name="active"/>
+    <field name="active"/>
+
     <label name="prospect"/>
     <field name="prospect"/>
 
@@ -23,4 +26,7 @@ this repository contains the full copyright notices and license terms. -->
             <field name="pending_calls" colspan="2"/>
         </page>
     </notebook>
+
+    <label name="state"/>
+    <field name="state"/>
 </form>
\ No newline at end of file