diff --git a/addons/web/static/src/scss/form_view_extra.scss b/addons/web/static/src/scss/form_view_extra.scss
index 18cb6ffdcda..ad7e8600cb3 100644
--- a/addons/web/static/src/scss/form_view_extra.scss
+++ b/addons/web/static/src/scss/form_view_extra.scss
@@ -1,5 +1,5 @@
 .o_form_view {
-    $sheet-max-width: 860px;
+    $sheet-max-width: 1140px;
     $sheet-min-width: 650px;
     $sheet-padding: 16px;