diff --git a/tests/constraints/tests.py b/tests/constraints/tests.py
index b7fe7cc8db..67d00b67ce 100644
--- a/tests/constraints/tests.py
+++ b/tests/constraints/tests.py
@@ -865,6 +865,7 @@ class UniqueConstraintTests(TestCase):
                 ChildUniqueConstraintProduct(name=self.p1.name, color=self.p1.color),
             )
 
+    @skipUnlessDBFeature("supports_table_check_constraints")
     def test_validate_fields_unattached(self):
         Product.objects.create(price=42)
         constraint = models.UniqueConstraint(fields=["price"], name="uniq_prices")
@@ -1039,6 +1040,7 @@ class UniqueConstraintTests(TestCase):
         is_not_null_constraint.validate(Product, Product(price=4, discounted_price=3))
         is_not_null_constraint.validate(Product, Product(price=2, discounted_price=1))
 
+    @skipUnlessDBFeature("supports_table_check_constraints")
     def test_validate_nulls_distinct_expressions(self):
         Product.objects.create(price=42)
         constraint = models.UniqueConstraint(