diff --git a/src/util/indirect_references.py b/src/util/indirect_references.py
index 5844b14c..65fc645c 100644
--- a/src/util/indirect_references.py
+++ b/src/util/indirect_references.py
@@ -85,6 +85,7 @@ def indirect_references(cr, bound_only=False):
         IR("studio_approval_entry", "model", "res_id"),
         IR("timer_timer", "res_model", "res_id"),
         IR("worksheet_template", "res_model", None),
+        IR("product_attribute_custom_value", "res_model", "res_id"),
     ]
 
     for ir in each: