1 files changed, 4 insertions, 4 deletions
diff --git a/addons/web/static/src/css/base.css b/addons/web/static/src/css/base.css
index 9cc03668fdc..c1ec5dfdf32 100644
--- a/addons/web/static/src/css/base.css
+++ b/addons/web/static/src/css/base.css
@@ -1916,14 +1916,14 @@ label.error {
     white-space: nowrap;
     display: block;
     }
-.treeview-tr:first-of-type {
+.treeview-tr.oe-treeview-first {
     background: transparent url(/web/static/src/img/expand.gif) 0 50% no-repeat;
 }
-.oe-open .treeview-tr:first-of-type {
+.oe-open .treeview-tr.oe-treeview-first {
     background-image: url(/web/static/src/img/collapse.gif);
 }
-.treeview-tr:first-of-type span,
-.treeview-td:first-of-type span {
+.treeview-tr.oe-treeview-first span,
+.treeview-td.oe-treeview-first span {
     margin-left: 16px;
 }