diff --git a/modoboa/static/css/login.css b/modoboa/static/css/login.css
index 230aa2fdd..f8e61d988 100644
--- a/modoboa/static/css/login.css
+++ b/modoboa/static/css/login.css
@@ -1,4 +1,4 @@
-@media (max-width: 770px) {
+@media (max-width: 767px) {
     form.login-form div.checkbox button.btn{
         margin-top: 20px;
         margin-bottom: 0;