diff --git a/addons/web_kanban/static/src/css/kanban.css b/addons/web_kanban/static/src/css/kanban.css
index 4af2eacb5d6..b2b44996803 100644
--- a/addons/web_kanban/static/src/css/kanban.css
+++ b/addons/web_kanban/static/src/css/kanban.css
@@ -162,7 +162,6 @@
   color: #666666;
 }
 .openerp .oe_kanban_view .oe_kanban_group_title_vertical {
-  writing-mode: tb-rl;
   -webkit-transform: rotate(90deg);
   -moz-transform: rotate(90deg);
   -o-transform: rotate(90deg);
@@ -667,7 +666,6 @@
   display: inline-block !important;
 }
 .openerp_ie .oe_kanban_view .oe_kanban_group_title_vertical {
-  -ms-writing-mode: lr-tb !important;
   background: #f0eeee;
 }
 .openerp_ie .oe_kanban_view.oe_kanban_grouped .oe_kanban_group_header {
diff --git a/addons/web_kanban/static/src/css/kanban.sass b/addons/web_kanban/static/src/css/kanban.sass
index 571033bfd45..4dbf26d0972 100644
--- a/addons/web_kanban/static/src/css/kanban.sass
+++ b/addons/web_kanban/static/src/css/kanban.sass
@@ -178,7 +178,6 @@
     .oe_kanban_group_title_undefined
         color: #666666
     .oe_kanban_group_title_vertical
-        writing-mode: tb-rl
         -webkit-transform: rotate(90deg)
         -moz-transform: rotate(90deg)
         -o-transform: rotate(90deg)
@@ -552,7 +551,6 @@
     .oe_kanban_group_header.oe_kanban_group_folded .oe_kanban_group_title_vertical
         display: inline-block !important
     .oe_kanban_group_title_vertical
-        -ms-writing-mode: lr-tb !important
         background: rgb(240, 238, 238)
     &.oe_kanban_grouped
         .oe_kanban_group_header