diff --git a/sao/src/sao.less b/sao/src/sao.less
index f3ea5cbf95..d72f0cdf62 100644
--- a/sao/src/sao.less
+++ b/sao/src/sao.less
@@ -496,6 +496,9 @@ img.icon {
             & > label {
                 display: none;
             }
+            & > div.value {
+                white-space: pre;
+            }
         }
         > tbody > tr > td {
             cursor: pointer;
diff --git a/sao/src/view/tree.js b/sao/src/view/tree.js
index 9da46d346b..70db0877fc 100644
--- a/sao/src/view/tree.js
+++ b/sao/src/view/tree.js
@@ -113,11 +113,10 @@
             }
 
             if (Boolean(parseInt(attributes.sum || '0', 10))) {
-                var label = attributes.string + Sao.i18n.gettext(': ');
                 var sum = jQuery('<label/>', {
-                    'text': label,
+                    'text': attributes.string,
                 });
-                var aggregate = jQuery('<span/>', {
+                var aggregate = jQuery('<div/>', {
                     'class': 'value',
                 });
                 this.view.sum_widgets.set(column, [sum, aggregate]);
@@ -1067,11 +1066,11 @@
                         sum_ = (sum_ || 0).toLocaleString(
                             Sao.i18n.BC47(Sao.i18n.getlang()), options);
                     }
-                    aggregate = selected_sum + ' / ' + sum_;
+                    aggregate = selected_sum + '\n' + sum_;
                 }
                 sum_value.text(aggregate);
                 sum_value.parent().attr(
-                    'title', sum_label.text() + ' ' + sum_value.text());
+                    'title', sum_label.text() + '\n' + sum_value.text());
             }
         },
         get selected_records() {
diff --git a/tryton/CHANGELOG b/tryton/CHANGELOG
index 5aacd9eebe..8a8dc26ac1 100644
--- a/tryton/CHANGELOG
+++ b/tryton/CHANGELOG
@@ -1,3 +1,4 @@
+* Display sum on column header
 
 Version 6.8.0 - 2023-05-01
 --------------------------
diff --git a/tryton/tryton/gui/window/view_form/view/list.py b/tryton/tryton/gui/window/view_form/view/list.py
index d6e8cd0d99..2451231bbe 100644
--- a/tryton/tryton/gui/window/view_form/view/list.py
+++ b/tryton/tryton/gui/window/view_form/view/list.py
@@ -337,19 +337,6 @@ class TreeXMLViewParser(XMLViewParser):
         if 'optional' in attributes:
             self.view.optionals.append(column)
 
-        if bool(int(attributes.get('sum', 0))):
-            text = attributes['string'] + _(':')
-            label, sum_ = Gtk.Label(label=text), Gtk.Label()
-
-            hbox = Gtk.HBox()
-            hbox.pack_start(label, expand=True, fill=False, padding=2)
-            hbox.pack_start(sum_, expand=True, fill=False, padding=2)
-            hbox.show_all()
-            self.view.sum_box.pack_start(
-                hbox, expand=False, fill=False, padding=0)
-
-            self.view.sum_widgets.append((attributes['name'], sum_))
-
     def _parse_button(self, node, attributes):
         button = Button(self.view, attributes)
         self.view.state_widgets.append(button)
@@ -392,7 +379,19 @@ class TreeXMLViewParser(XMLViewParser):
             hbox.pack_start(arrow_widget, expand=False, fill=False, padding=0)
             column.set_clickable(True)
         hbox.show()
-        column.set_widget(hbox)
+        if bool(int(attributes.get('sum', 0))):
+            vbox = Gtk.VBox(homogeneous=False, spacing=0)
+            vbox.pack_start(hbox, expand=False, fill=True, padding=0)
+            sum_ = Gtk.Label()
+            sum_.set_justify(Gtk.Justification.RIGHT)
+            sum_.show()
+            vbox.pack_start(sum_, expand=False, fill=True, padding=0)
+            self.view.sum_widgets.append((attributes['name'], sum_))
+            vbox.show()
+            widget = vbox
+        else:
+            widget = hbox
+        column.set_widget(widget)
         column.set_alignment(align)
 
     def _set_column_width(self, column, attributes):
@@ -1205,7 +1204,7 @@ class ViewTree(View):
                         '{}'.format(selected_sum or 0), True)
                     sum_ = locale.localize('{}'.format(sum_ or 0), True)
 
-                text = '%s / %s' % (selected_sum, sum_)
+                text = '%s\n%s' % (selected_sum, sum_)
             else:
                 text = '-'
             label.set_text(text)