diff --git a/prospect_trace.py b/prospect_trace.py
index acb0877..5265aed 100644
--- a/prospect_trace.py
+++ b/prospect_trace.py
@@ -73,9 +73,10 @@ class ProspectTrace(ModelSQL, ModelView):
         pool = Pool()
         ContactMethod = pool.get('prospect.contact_method')
 
-        contact_mobile, = ContactMethod.search(
+        contact_mobile = ContactMethod.search(
             [('prospect', '=', self.prospect.id),
             ('contact_type', '=', 'mobile')],
             limit=1)
 
-        return contact_mobile
+        if contact_mobile:
+            return contact_mobile[0]
diff --git a/tests/scenario_sale_opportunity_management.rst b/tests/scenario_sale_opportunity_management.rst
index f193fed..06709b6 100644
--- a/tests/scenario_sale_opportunity_management.rst
+++ b/tests/scenario_sale_opportunity_management.rst
@@ -195,6 +195,16 @@ Programar una próxima llamada pendiente al seguimiento de prospecto::
     >>> prospect_trace.state
     'with_pending_calls'
 
+El usuario no ingresa un tipo mobile en contact_method::
+    >>> prospect2 = Prospect()
+    >>> prospect2.name = 'Sin celulares S.A.S'
+    >>> contact_method = prospect2.contact_methods.new(contact_type='mail', value='felpucio@sincelulares.org', name='felpucio', job='Supervisor')
+    >>> prospect2.save()
+
+    >>> prospect_trace2 = ProspectTrace()
+    >>> prospect_trace2.prospect = prospect2
+
+    >>> prospect_trace2.save()
 
 --------
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