diff --git a/manuels/forms.py b/manuels/forms.py
index e13bf89..3e66514 100644
--- a/manuels/forms.py
+++ b/manuels/forms.py
@@ -44,6 +44,13 @@ class EditBookForm(forms.ModelForm):
                 )
             )
 
+    def clean_previously_acquired(self):
+        data = self.cleaned_data['previously_acquired']
+        if data is None or data == '':
+            raise ValidationError('Vous devez choisir une valeur')
+
+        return data
+
 
 class AddBookForm(EditBookForm):
     class Meta(EditBookForm.Meta):
diff --git a/manuels/models.py b/manuels/models.py
index 9d892b0..6210ccd 100644
--- a/manuels/models.py
+++ b/manuels/models.py
@@ -164,6 +164,7 @@ class Book(BaseModel):
     )
     price = models.FloatField('prix', validators=[positive_float_validator])
     YES_NO_CHOICE = (
+        (None, '------------'),
         (False, 'Non'),
         (True, 'Oui'),
     )
@@ -171,7 +172,7 @@ class Book(BaseModel):
         "manuel acquis précédemment par l'élève",
         choices=YES_NO_CHOICE,
         blank=False,
-        default=False,
+        default=None,
     )
     done = models.BooleanField(
         'Traité',
diff --git a/manuels/static/manuels/no_book.js b/manuels/static/manuels/no_book.js
index 675c1e6..9bf1925 100644
--- a/manuels/static/manuels/no_book.js
+++ b/manuels/static/manuels/no_book.js
@@ -19,6 +19,7 @@ document.addEventListener("DOMContentLoaded", function (event) {
             isbn: document.querySelector('#id_isbn').value,
             price: document.querySelector('#id_price').value,
             editor: document.querySelector('#id_editor').value,
+            previouslyAcquired: document.querySelector('#id_previously_acquired').value,
         };
         _selector.addEventListener('change', function (event) {
             if (_selector.checked) {
@@ -29,12 +30,14 @@ document.addEventListener("DOMContentLoaded", function (event) {
                     isbn: document.querySelector('#id_isbn').value,
                     price: document.querySelector('#id_price').value,
                     editor: document.querySelector('#id_editor').value,
+                    previouslyAcquired: document.querySelector('#id_previously_acquired').value,
                 };
                 document.querySelector('#id_title').value = selector.value;
                 document.querySelector('#id_authors').value = "N/A";
                 document.querySelector('#id_publication_year').value = 1900;
                 document.querySelector('#id_isbn').value = "0000000000";
                 document.querySelector('#id_price').value = 0;
+                document.querySelector('#id_previously_acquired').value = "False";
                 var editorValue = null;
                 for (var option of document.querySelector('#id_editor').children) {
                     if (editorValue === null && option.value !== "") {
@@ -52,6 +55,7 @@ document.addEventListener("DOMContentLoaded", function (event) {
                 document.querySelector('#id_publication_year').value = data.publicationYear;
                 document.querySelector('#id_isbn').value = data.isbn;
                 document.querySelector('#id_price').value = data.price;
+                document.querySelector('#id_previously_acquired').value = data.previouslyAcquired;
             }
         });
     });