diff --git a/app/models/type_de_piece_justificative.rb b/app/models/type_de_piece_justificative.rb
index 6ab69f5a6..9f73f59be 100644
--- a/app/models/type_de_piece_justificative.rb
+++ b/app/models/type_de_piece_justificative.rb
@@ -4,4 +4,6 @@ class TypeDePieceJustificative < ActiveRecord::Base
   belongs_to :procedure
 
   validates :libelle, presence: true, allow_blank: false, allow_nil: false
+
+  validates_format_of :lien_demarche, with: URI::regexp
 end
diff --git a/app/serializers/type_de_piece_justificative_serializer.rb b/app/serializers/type_de_piece_justificative_serializer.rb
index 9dc1743b0..cff798508 100644
--- a/app/serializers/type_de_piece_justificative_serializer.rb
+++ b/app/serializers/type_de_piece_justificative_serializer.rb
@@ -2,5 +2,6 @@ class TypeDePieceJustificativeSerializer < ActiveModel::Serializer
   attributes :id,
              :libelle,
              :description,
-             :order_place
-end
\ No newline at end of file
+             :order_place,
+             :lien_demarche
+end
diff --git a/spec/models/type_de_piece_justificative_spec.rb b/spec/models/type_de_piece_justificative_spec.rb
index a2b47c14e..2983e6857 100644
--- a/spec/models/type_de_piece_justificative_spec.rb
+++ b/spec/models/type_de_piece_justificative_spec.rb
@@ -10,6 +10,7 @@ describe TypeDePieceJustificative do
     it { is_expected.to have_db_column(:created_at) }
     it { is_expected.to have_db_column(:updated_at) }
     it { is_expected.to have_db_column(:order_place) }
+    it { is_expected.to have_db_column(:lien_demarche) }
   end
 
   describe 'associations' do
@@ -29,5 +30,12 @@ describe TypeDePieceJustificative do
       # it { is_expected.not_to allow_value('').for(:order_place) }
       it { is_expected.to allow_value(1).for(:order_place) }
     end
+
+    context 'lien_demarche' do
+      it { is_expected.not_to allow_value(nil).for(:lien_demarche) }
+      it { is_expected.not_to allow_value('').for(:lien_demarche) }
+      it { is_expected.not_to allow_value('not-a-link').for(:lien_demarche) }
+      it { is_expected.to allow_value('http://link').for(:lien_demarche) }
+    end
   end
 end