diff --git a/app/models/person.rb b/app/models/person.rb
index 02bdf96..b232d02 100644
--- a/app/models/person.rb
+++ b/app/models/person.rb
@@ -122,7 +122,7 @@ class Person < Profile
 
   validates_each :birth_date do |record,attr,value|
     if value && value.year == 1
-      record.errors.add(attr, _('%{fn} is invalid'))
+      record.errors.add(attr)
     end
   end
 
@@ -135,7 +135,7 @@ class Person < Profile
     self.required_fields.each do |field|
       if self.send(field).blank?
         unless (field == 'custom_area_of_study' && self.area_of_study != 'Others') || (field == 'custom_formation' && self.formation != 'Others')
-          self.errors.add(field, _('%{fn} is mandatory'))
+          self.errors.add_on_blank(field)
         end
       end
     end
diff --git a/features/edit_profile.feature b/features/edit_profile.feature
index e83e925..32b2cb8 100644
--- a/features/edit_profile.feature
+++ b/features/edit_profile.feature
@@ -16,7 +16,7 @@ Feature: edit profile
     And I select "15"
     And I press "Save"
     Then I should see "Birth date is invalid"
-    And I should not see "Birth date is mandatory"
+    And I should not see "Birth date can't be blank"
 
   Scenario: Warn about invalid birth date when required
     Given the following person fields are required fields
@@ -28,7 +28,7 @@ Feature: edit profile
     And I select "15"
     And I press "Save"
     Then I should see "Birth date is invalid"
-    And I should see "Birth date is mandatory"
+    And I should not see "Birth date can't be blank"
 
   Scenario: Not warn if birth date is valid when active
     Given the following person fields are active fields
--
libgit2 0.21.2