diff --git a/issue12235.diff b/issue12235.diff
new file mode 100644
index 0000000..d54a03a
--- /dev/null
+++ b/issue12235.diff
@@ -0,0 +1,12 @@
+diff --git a/tryton/trytond/trytond/model/fields/many2one.py b/tryton/trytond/trytond/model/fields/many2one.py
+index 13e1a957ad..3adb1a9654 100644
+--- a/tryton/trytond/trytond/model/fields/many2one.py
++++ b/tryton/trytond/trytond/model/fields/many2one.py
+@@ -129,6 +129,7 @@ class Many2One(Field):
+         red_sql = reduce_ids(table.id, (i for i in ids if i is not None))
+         Target = self.get_target()
+         path_column = getattr(Target, self.path).sql_column(table)
++        path_column = Coalesce(path_column, '')
+         cursor.execute(*table.select(path_column, where=red_sql))
+         if operator.endswith('child_of'):
+             where = Or()
diff --git a/series b/series
index c5b9464..52e6a45 100644
--- a/series
+++ b/series
@@ -63,3 +63,5 @@ account_move_reschedule_line.diff # [account] Fix bug when reschedule the move_l
 country.diff # [counrty] backport counrty module from v6.8. Is needed for the use of account_stock_eu module.
 
 issue12310.diff # [stock_product_location] Check product.product locations and product.template locations too.
+
+issue12235.diff # [trytond] Fallback to empty string when column path is NULL