diff --git a/openupgrade_scripts/scripts/hr_holidays/17.0.1.6/pre-migration.py b/openupgrade_scripts/scripts/hr_holidays/17.0.1.6/pre-migration.py
index a9c47fb693e0..0833472ab6b6 100644
--- a/openupgrade_scripts/scripts/hr_holidays/17.0.1.6/pre-migration.py
+++ b/openupgrade_scripts/scripts/hr_holidays/17.0.1.6/pre-migration.py
@@ -20,6 +20,18 @@
     ],
 }
 
+_field_add = [
+    (
+        "number_of_hours",
+        "hr.leave",
+        "hr_leave",
+        "float",
+        None,
+        "hr_holidays",
+        0.0,
+    ),
+]
+
 
 def _pre_create_accrual_plan_active(cr):
     """
@@ -156,6 +168,7 @@ def migrate(env, version):
     openupgrade.rename_models(env.cr, _model_renames)
     openupgrade.rename_tables(env.cr, _table_renames)
     openupgrade.rename_columns(env.cr, _column_renames)
+    openupgrade.add_fields(env, _field_add)
     _pre_create_accrual_plan_active(env.cr)
     _hr_leave_company_id(env.cr)
     _map_leave_accrual_level_action(env.cr)
diff --git a/openupgrade_scripts/scripts/hr_holidays/17.0.1.6/upgrade_analysis_work.txt b/openupgrade_scripts/scripts/hr_holidays/17.0.1.6/upgrade_analysis_work.txt
index 0faccd0c5fdf..700f71baf9c5 100644
--- a/openupgrade_scripts/scripts/hr_holidays/17.0.1.6/upgrade_analysis_work.txt
+++ b/openupgrade_scripts/scripts/hr_holidays/17.0.1.6/upgrade_analysis_work.txt
@@ -29,8 +29,10 @@ hr_holidays  / hr.leave                 / mode_company_id (many2one)    : not a
 # NOTHING TO DO: states removed only
 
 hr_holidays  / hr.leave                 / number_of_days (float)        : now a function
+# NOTHING TO DO
+
 hr_holidays  / hr.leave                 / number_of_hours (float)       : NEW isfunction: function, stored
-# NOTHING TO DO: computed fields
+# DONE: pre-migration: add column for avoiding the computation
 
 hr_holidays  / hr.leave                 / rating_ids (one2many)         : NEW relation: rating.rating
 hr_holidays  / hr.leave                 / resource_calendar_id (many2one): NEW relation: resource.calendar, hasdefault: compute