diff --git a/smash/web/forms/appointment_form.py b/smash/web/forms/appointment_form.py
index 3966c13ea7a11f97bab74defb7f38c20a5b29082..d59ba8eff08f35e65e0de989e5a9c89d9b5cf85c 100644
--- a/smash/web/forms/appointment_form.py
+++ b/smash/web/forms/appointment_form.py
@@ -52,7 +52,7 @@ class AppointmentForm(ModelForm):
                 else:
                     previous_value = ''
                 new_value = str(self.cleaned_data[field])
-                description = '{} changed from "{}" to "{}"'.format(field, previous_value, new_value)
+                description = u'{} changed from "{}" to "{}"'.format(field, previous_value, new_value)
 
             p = Provenance(modified_table=Appointment._meta.db_table,
                            modified_table_id=self.instance.id,
diff --git a/smash/web/models/subject.py b/smash/web/models/subject.py
index ed90375f22a2cf53a3d70c7bea19fa00c21d1588..8781279a53a0009aae8981e3da500fad5fbde508 100644
--- a/smash/web/models/subject.py
+++ b/smash/web/models/subject.py
@@ -161,7 +161,7 @@ def set_as_deceased(sender, instance, **kwargs):
         p = Provenance(modified_table = Subject._meta.db_table,
                     modified_table_id = instance.id, modification_author = None,
                     previous_value = instance.dead, new_value = True,
-                    modification_description = 'Subject "{}" marked as dead'.format(instance),
+                    modification_description = u'Subject "{}" marked as dead'.format(instance),
                     modified_field = 'dead',
                     )
         instance.mark_as_dead()
diff --git a/smash/web/views/subject.py b/smash/web/views/subject.py
index 1583412ae89e5cb740e9a6fc3aab8581fdf71ee1..5601e99b7e441774214da5b1de85b10bcd00fbc2 100644
--- a/smash/web/views/subject.py
+++ b/smash/web/views/subject.py
@@ -92,7 +92,7 @@ def subject_edit(request, id):
                                 modification_author = worker,
                                 previous_value = old_type,
                                 new_value = study_subject_form.cleaned_data['type'],
-                                modification_description = 'Worker "{}" changed study subject "{}" from "{}" to "{}"'.format(worker, 
+                                modification_description = u'Worker "{}" changed study subject "{}" from "{}" to "{}"'.format(worker, 
                                                 study_subject.subject, old_value, new_value),
                                 modified_field = 'type',
                                 )
@@ -104,7 +104,7 @@ def subject_edit(request, id):
                                 modification_author = worker,
                                 previous_value = was_dead,
                                 new_value = True,
-                                modification_description = 'Worker "{}" marks subject "{}" as dead'.format(worker, study_subject.subject),
+                                modification_description = u'Worker "{}" marks subject "{}" as dead'.format(worker, study_subject.subject),
                                 modified_field = 'dead',
                                 )
                 study_subject.subject.mark_as_dead()
@@ -116,7 +116,7 @@ def subject_edit(request, id):
                                 modification_author = worker,
                                 previous_value = was_resigned,
                                 new_value = True,
-                                modification_description = 'Worker "{}" marks study subject "{}" as resigned from study "{}"'.format(worker, study_subject.nd_number, study_subject.study),
+                                modification_description = u'Worker "{}" marks study subject "{}" as resigned from study "{}"'.format(worker, study_subject.nd_number, study_subject.study),
                                 modified_field = 'resigned',
                                 )
                 study_subject.mark_as_resigned()
diff --git a/smash/web/views/visit.py b/smash/web/views/visit.py
index 05d0ac44e9022231b52552752d32d64f31917ecd..c5c98c89d25c2a61cebbb0eb231f025030b8f508 100644
--- a/smash/web/views/visit.py
+++ b/smash/web/views/visit.py
@@ -99,7 +99,7 @@ def visit_mark(request, id, as_what):
                     modification_author = worker,
                     previous_value = visit.is_finished,
                     new_value = True,
-                    modification_description = 'Worker "{}" marked visit from "{}" as finished'.format(worker, visit.subject),
+                    modification_description = u'Worker "{}" marked visit from "{}" as finished'.format(worker, visit.subject),
                     modified_field = 'is_finished',
             )
         visit.mark_as_finished()