diff --git a/addons/product/models/product_template.py b/addons/product/models/product_template.py
index 182997ce166..a04bec14625 100644
--- a/addons/product/models/product_template.py
+++ b/addons/product/models/product_template.py
@@ -406,7 +406,7 @@ class ProductTemplate(models.Model):
             ]
 
             # get the value (id) sets of existing variants
-            existing_variants = {frozenset(variant.attribute_value_ids.ids) for variant in tmpl_id.product_variant_ids}
+            existing_variants = {frozenset(variant.attribute_value_ids.filtered(lambda r: r.attribute_id.create_variant).ids) for variant in tmpl_id.product_variant_ids}
             # -> for each value set, create a recordset of values to create a
             #    variant for if the value set isn't already a variant
             to_create_variants = [
diff --git a/addons/product/tests/test_variants.py b/addons/product/tests/test_variants.py
index 1a621d689cb..7917a0d4a2b 100644
--- a/addons/product/tests/test_variants.py
+++ b/addons/product/tests/test_variants.py
@@ -330,3 +330,23 @@ class TestVariantsNoCreate(common.TestProductCommon):
             {variant.attribute_value_ids for variant in template.product_variant_ids},
             {self.prod_attr1_v1, self.prod_attr1_v2},
         )
+
+    def test_update_variant_with_nocreate(self):
+        """ update variants with a 'nocreate' value on variant """
+        template = self.env['product.template'].create({
+            'name': 'Sofax',
+            'uom_id': self.uom_unit.id,
+            'uom_po_id': self.uom_unit.id,
+            'attribute_line_ids': [
+                (0, 0, { # one variant for this one
+                    'attribute_id': self.prod_att_1.id,
+                    'value_ids': [(4, self.prod_attr1_v1.id)],
+                }),
+            ],
+        })
+        self.assertEqual(len(template.product_variant_ids), 1)
+
+        for variant_id in template.product_variant_ids:
+            variant_id.attribute_value_ids += self.size_S
+        template.attribute_line_ids += template.attribute_line_ids.browse()
+        self.assertEqual(len(template.product_variant_ids), 1)