diff --git a/addons/hr_timesheet/static/src/scss/timesheets_task_form.scss b/addons/hr_timesheet/static/src/scss/timesheets_task_form.scss
index 6fe10fc2267..5782c838192 100644
--- a/addons/hr_timesheet/static/src/scss/timesheets_task_form.scss
+++ b/addons/hr_timesheet/static/src/scss/timesheets_task_form.scss
@@ -1,3 +1,7 @@
 .o_project_kanban .o_kanban_renderer .oe_kanban_align.badge {
     color: inherit;
 }
+
+.o_web_studio_form_view_editor .o_field_widget.o_web_studio_widget_empty.o_task_planned_hours {
+    max-width: 70ch;
+}
diff --git a/addons/hr_timesheet/views/project_task_views.xml b/addons/hr_timesheet/views/project_task_views.xml
index 06be07a7c89..e64d8668049 100644
--- a/addons/hr_timesheet/views/project_task_views.xml
+++ b/addons/hr_timesheet/views/project_task_views.xml
@@ -19,7 +19,7 @@
                     <field name="subtask_count" invisible="1"/>
                     <label for="allocated_hours" invisible="not allow_timesheets" groups="hr_timesheet.group_hr_timesheet_user"/>
                     <div class="text-nowrap" invisible="not allow_timesheets" groups="hr_timesheet.group_hr_timesheet_user">
-                        <field name="allocated_hours" class="oe_inline o_field_float_time" widget="timesheet_uom_no_toggle"/>
+                        <field name="allocated_hours" class="oe_inline o_field_float_time o_task_planned_hours" widget="timesheet_uom_no_toggle"/>
                         <span invisible="subtask_count == 0">
                             (incl. <field name="subtask_allocated_hours" nolabel="1" widget="timesheet_uom_no_toggle" class="oe_inline"/> on
                             <span class="fw-bold text-dark"> Sub-tasks</span>)