diff --git a/app/models/individual.rb b/app/models/individual.rb
index 5e3fd2ea6..8ab792ab4 100644
--- a/app/models/individual.rb
+++ b/app/models/individual.rb
@@ -5,12 +5,4 @@ class Individual < ApplicationRecord
   validates :gender, presence: true, allow_nil: false, on: :update
   validates :nom, presence: true, allow_blank: false, allow_nil: false, on: :update
   validates :prenom, presence: true, allow_blank: false, allow_nil: false, on: :update
-
-  def birthdate
-    second_birthdate
-  end
-
-  def birthdate=(date)
-    self.second_birthdate = date
-  end
 end
diff --git a/spec/models/individual_spec.rb b/spec/models/individual_spec.rb
index 6b11324f1..41c7b5a2f 100644
--- a/spec/models/individual_spec.rb
+++ b/spec/models/individual_spec.rb
@@ -21,21 +21,18 @@ describe Individual do
         let(:birthdate_from_user) { "12/11/1980" }
 
         it { expect(individual.birthdate).to eq(Date.new(1980, 11, 12)) }
-        it { expect(individual.second_birthdate).to eq(Date.new(1980, 11, 12)) }
       end
 
       context "and the format is ISO" do
         let(:birthdate_from_user) { "1980-11-12" }
 
         it { expect(individual.birthdate).to eq(Date.new(1980, 11, 12)) }
-        it { expect(individual.second_birthdate).to eq(Date.new(1980, 11, 12)) }
       end
 
       context "and the format is WTF" do
         let(:birthdate_from_user) { "1980 1 12" }
 
         it { expect(individual.birthdate).to be_nil }
-        it { expect(individual.second_birthdate).to be_nil }
       end
     end
   end