1 files changed, 1 insertions, 4 deletions
diff --git a/addons/web/static/src/js/views/pivot/pivot_renderer.js b/addons/web/static/src/js/views/pivot/pivot_renderer.js
index b74b408c877..3affc975225 100644
--- a/addons/web/static/src/js/views/pivot/pivot_renderer.js
+++ b/addons/web/static/src/js/views/pivot/pivot_renderer.js
@@ -125,10 +125,7 @@ var PivotRenderer = AbstractRenderer.extend({
                     if (rowIndex > 0) {
                         cellParams.title = groupbyLabels[rowIndex - 1];
                     }
-                    className = 'o_pivot_header_cell';
-                    if (!config.device.isMobile) {
-                        className += cell.isLeaf ? '_closed' : '_opened';
-                    }
+                    className = 'o_pivot_header_cell' + (cell.isLeaf ? '_closed' : '_opened');
                 }
                 cellParams.class = className;