diff --git a/addons/product/migrations/13.0.1.2/post-migration.py b/addons/product/migrations/13.0.1.2/post-migration.py
index 6d51f1896e11..515c871f4b15 100644
--- a/addons/product/migrations/13.0.1.2/post-migration.py
+++ b/addons/product/migrations/13.0.1.2/post-migration.py
@@ -36,8 +36,11 @@ def fill_product_variant_combination_table(env):
         (product_product_id, product_template_attribute_value_id)
         SELECT pavppr.product_product_id, ptav.id
         FROM product_attribute_value_product_product_rel pavppr
-        JOIN product_template_attribute_value ptav ON
-            ptav.product_attribute_value_id = pavppr.product_attribute_value_id
+        JOIN product_product pp
+            ON pp.id = pavppr.product_product_id
+        JOIN product_template_attribute_value ptav
+            ON ptav.product_attribute_value_id = pavppr.product_attribute_value_id
+                AND pp.product_tmpl_id = ptav.product_tmpl_id
         """,
     )