diff --git a/media/forms.py b/media/forms.py
index b3c3775..f904bf4 100644
--- a/media/forms.py
+++ b/media/forms.py
@@ -26,6 +26,8 @@ class MediaAdminForm(ModelForm):
         Download data from bedeteque
         :return True if success
         """
+        print(self.request.POST)
+        print('isbn' in self.request.POST)
         scraper = BedetequeScraper()
         r = scraper.search_by_isbn(isbn)
         if not r:
@@ -33,7 +35,6 @@ class MediaAdminForm(ModelForm):
         # If results, then take the most accurate
         data = scraper.scrap_bd_info(r[0])
         self.cleaned_data.update(data)
-        print(self.cleaned_data)
         return True
 
     def download_data_openlibrary(self, isbn):
@@ -93,7 +94,7 @@ class MediaAdminForm(ModelForm):
         """
         super().clean()
 
-        if "_continue" in self.request.POST:
+        if "_isbn" in self.request.POST:
             isbn = self.cleaned_data.get('isbn')
             if isbn:
                 # ISBN is present, try with bedeteque
@@ -175,7 +176,7 @@ class MediaAdminForm(ModelForm):
             from django.core.exceptions import ValidationError
             try:
                 # We don't want to check a field when we enter an ISBN.
-                if "_continue" not in self.request.POST \
+                if "isbn" not in self.request.POST \
                         or not self.cleaned_data.get('isbn'):
                     value = field.clean(value)
                 self.cleaned_data[name] = value
diff --git a/media/templates/media/isbn_button.html b/media/templates/media/isbn_button.html
index 36bd9b2..1d1903d 100644
--- a/media/templates/media/isbn_button.html
+++ b/media/templates/media/isbn_button.html
@@ -1,3 +1,4 @@
 {% load i18n %}
 {% include "django/forms/widgets/input.html" %}
-<input type="submit" value="{% trans "Fetch data" %}" name="_continue">
\ No newline at end of file
+<input type="submit" value="{% trans "Fetch data" %}" name="_isbn">
+<input type="hidden" name="_addanother" value="42">
\ No newline at end of file
diff --git a/tool_barcode_getblue.py b/tool_barcode_getblue.py
index fd5b8cf..533414a 100644
--- a/tool_barcode_getblue.py
+++ b/tool_barcode_getblue.py
@@ -22,6 +22,9 @@ class Server(BaseHTTPRequestHandler):
     def do_GET(self):
         self._set_headers()
         isbn = self.path[7:-24]
+        if not isbn.isnumeric():
+            print("Mauvais ISBN.")
+            return
         print("Hey j'ai un ISBN :", isbn)
         os.system("xdotool type " + isbn)
         os.system("xdotool key KP_Enter")