diff --git a/addons/web_kanban/static/src/css/kanban.css b/addons/web_kanban/static/src/css/kanban.css
index fbda6d3e4c5..664fb8ef55f 100644
--- a/addons/web_kanban/static/src/css/kanban.css
+++ b/addons/web_kanban/static/src/css/kanban.css
@@ -204,6 +204,9 @@
   opacity: 0.75;
   top: 26px;
 }
+:root .openerp .oe_kanban_view .oe_kanban_group_title_vertical {
+  writing-mode: lr-tb\9;
+}
 .openerp .oe_kanban_view .oe_kanban_add, .openerp .oe_kanban_view .oe_kanban_header .oe_dropdown_toggle {
   margin-left: 4px;
   cursor: pointer;