diff --git a/addons/base_automation/models/base_automation.py b/addons/base_automation/models/base_automation.py
index a482d7d5911..196ebe9965f 100644
--- a/addons/base_automation/models/base_automation.py
+++ b/addons/base_automation/models/base_automation.py
@@ -249,7 +249,7 @@ class BaseAutomation(models.Model):
                 # read old values before the update
                 old_values = {
                     old_vals.pop('id'): old_vals
-                    for old_vals in records.read(list(vals))
+                    for old_vals in (records.read(list(vals)) if vals else [])
                 }
                 # call original method
                 _write.origin(records, vals, **kw)