diff --git a/smash/web/forms/subject_forms.py b/smash/web/forms/subject_forms.py
index 64047cb9169f5eff11ed78dc01a79293c5ce772c..e60082bc21ccfc1253e8108370fdb6fb192d34bd 100644
--- a/smash/web/forms/subject_forms.py
+++ b/smash/web/forms/subject_forms.py
@@ -18,8 +18,7 @@ def validate_subject_country(self, cleaned_data):
 
 def validate_social_security_number(self, number):
     if not is_valid_social_security_number(number):
-        self.add_error('social_security_number',
-                       "Social security number is invalid")
+        self.add_error('social_security_number', "Social security number is invalid")
 
 FIELD_ORDER = ["first_name", "last_name", "sex", "date_born", "social_security_number",
                "default_written_communication_language", "languages", "phone_number", "phone_number_2",
@@ -28,10 +27,7 @@ FIELD_ORDER = ["first_name", "last_name", "sex", "date_born", "social_security_n
 
 class SubjectAddForm(ModelForm):
     date_born = forms.DateField(label="Date of birth",
-                                widget=forms.DateInput(
-                                    DATEPICKER_DATE_ATTRS, "%Y-%m-%d"),
-                                required=False
-                                )
+                                widget=forms.DateInput( DATEPICKER_DATE_ATTRS, "%Y-%m-%d"), required=False)
 
     field_order = FIELD_ORDER
 
@@ -43,17 +39,13 @@ class SubjectAddForm(ModelForm):
     def clean(self):
         cleaned_data = super(SubjectAddForm, self).clean()
         validate_subject_country(self, cleaned_data)
-        validate_social_security_number(
-            self, cleaned_data["social_security_number"])
+        validate_social_security_number(self, cleaned_data["social_security_number"])
         return cleaned_data
 
 
 class SubjectEditForm(ModelForm):
     date_born = forms.DateField(label="Date of birth",
-                                widget=forms.DateInput(
-                                    DATEPICKER_DATE_ATTRS, "%Y-%m-%d"),
-                                required=False
-                                )
+                                widget=forms.DateInput(DATEPICKER_DATE_ATTRS, "%Y-%m-%d"), required=False)
 
     field_order = FIELD_ORDER
 
@@ -67,8 +59,7 @@ class SubjectEditForm(ModelForm):
 
     def clean(self):
         validate_subject_country(self, self.cleaned_data)
-        validate_social_security_number(
-            self, self.cleaned_data["social_security_number"])
+        validate_social_security_number(self, self.cleaned_data["social_security_number"])
 
     class Meta:
         model = Subject