diff --git a/django/db/backends/base/schema.py b/django/db/backends/base/schema.py
index 896d3a6acf..13093e729d 100644
--- a/django/db/backends/base/schema.py
+++ b/django/db/backends/base/schema.py
@@ -291,10 +291,8 @@ class BaseDatabaseSchemaEditor:
             ),
         }
         db_tablespace = None
-        if settings.DATABASES[self.connection.alias]["OPTIONS"].get(
-            "DEFAULT_TABLESPACE"
-        ):
-            db_tablespace = settings.DATABASES[self.connection.alias]["OPTIONS"][
+        if settings.DATABASES[self.connection.alias].get("DEFAULT_TABLESPACE"):
+            db_tablespace = settings.DATABASES[self.connection.alias][
                 "DEFAULT_TABLESPACE"
             ]
         elif model._meta.db_tablespace:
@@ -368,9 +366,7 @@ class BaseDatabaseSchemaEditor:
         # Optionally add the tablespace if it's an implicitly indexed column.
         tablespace = (
             field.db_tablespace
-            or settings.DATABASES[self.connection.alias]["OPTIONS"].get(
-                "DEFAULT_TABLESPACE"
-            )
+            or settings.DATABASES[self.connection.alias].get("DEFAULT_TABLESPACE")
             or model._meta.db_tablespace
         )
         if (
@@ -1530,15 +1526,15 @@ class BaseDatabaseSchemaEditor:
 
     def _get_index_tablespace_sql(self, model, fields, db_tablespace=None):
         if db_tablespace is None:
-            db_options = settings.DATABASES[self.connection.alias]["OPTIONS"]
+            db_settings = settings.DATABASES[self.connection.alias]
             if len(fields) == 1 and fields[0].db_tablespace:
                 db_tablespace = fields[0].db_tablespace
-            elif db_options.get("DEFAULT_INDEX_TABLESPACE"):
-                db_tablespace = db_options["DEFAULT_INDEX_TABLESPACE"]
+            elif db_settings.get("DEFAULT_INDEX_TABLESPACE"):
+                db_tablespace = db_settings["DEFAULT_INDEX_TABLESPACE"]
             elif settings.DEFAULT_INDEX_TABLESPACE:
                 db_tablespace = settings.DEFAULT_INDEX_TABLESPACE
-            elif db_options.get("DEFAULT_TABLESPACE"):
-                db_tablespace = db_options["DEFAULT_TABLESPACE"]
+            elif db_settings.get("DEFAULT_TABLESPACE"):
+                db_tablespace = db_settings["DEFAULT_TABLESPACE"]
             elif model._meta.db_tablespace:
                 db_tablespace = model._meta.db_tablespace
         if db_tablespace is not None:
diff --git a/django/db/models/fields/__init__.py b/django/db/models/fields/__init__.py
index 88dd867ff4..72973bda83 100644
--- a/django/db/models/fields/__init__.py
+++ b/django/db/models/fields/__init__.py
@@ -924,9 +924,7 @@ class Field(RegisterLookupMixin):
     def db_tablespace(self):
         return (
             self._db_tablespace
-            or settings.DATABASES[connection.alias]["OPTIONS"].get(
-                "DEFAULT_INDEX_TABLESPACE"
-            )
+            or settings.DATABASES[connection.alias].get("DEFAULT_INDEX_TABLESPACE")
             or settings.DEFAULT_INDEX_TABLESPACE
         )
 
diff --git a/docs/releases/5.1.txt b/docs/releases/5.1.txt
index b81437a6ee..7e4464ecd7 100644
--- a/docs/releases/5.1.txt
+++ b/docs/releases/5.1.txt
@@ -433,8 +433,8 @@ Miscellaneous
 * Overriding existing converters with ``django.urls.register_converter()`` is
   deprecated.
 * The :setting:`DEFAULT_TABLESPACE` and :setting:`DEFAULT_INDEX_TABLESPACE`
-  settings are deprecated. Set them in the :setting:`OPTIONS` part of your
-  database configuration in :setting:`DATABASES` instead.
+  settings are deprecated. Set them in your database configuration in
+  :setting:`DATABASES` instead.
 
 * The ``check`` keyword argument of ``CheckConstraint`` is deprecated in favor
   of ``condition``.
diff --git a/docs/topics/db/tablespaces.txt b/docs/topics/db/tablespaces.txt
index cb0b69764c..bcb950bd15 100644
--- a/docs/topics/db/tablespaces.txt
+++ b/docs/topics/db/tablespaces.txt
@@ -21,8 +21,8 @@ the :attr:`~django.db.models.Options.db_tablespace` option inside the model's
 ``class Meta``. This option also affects tables automatically created for
 :class:`~django.db.models.ManyToManyField`\ s in the model.
 
-You can use ``DEFAULT_TABLESPACE`` in the :setting:`OPTIONS` part of your
-database configuration in :setting:`DATABASES` to specify a default value for
+You can use ``DEFAULT_TABLESPACE`` in your database configuration in
+:setting:`DATABASES` to specify a default value for
 :attr:`~django.db.models.Options.db_tablespace`. This is useful for setting a
 tablespace for the built-in Django apps and other applications whose code you
 cannot control.
@@ -41,8 +41,8 @@ For single field indexes, you can pass the
 to specify an alternate tablespace for the field's column index. If the column
 doesn't have an index, the option is ignored.
 
-You can use ``DEFAULT_INDEX_TABLESPACE`` in the :setting:`OPTIONS` part of your
-database configuration in :setting:`DATABASES` to specify a default value for
+You can use ``DEFAULT_INDEX_TABLESPACE`` in your database configuration in
+:setting:`DATABASES` to specify a default value for
 :attr:`~django.db.models.Field.db_tablespace`.
 
 If :attr:`~django.db.models.Field.db_tablespace` isn't specified and you didn't
diff --git a/tests/model_options/test_tablespaces.py b/tests/model_options/test_tablespaces.py
index 4f6a0056aa..e2c6052737 100644
--- a/tests/model_options/test_tablespaces.py
+++ b/tests/model_options/test_tablespaces.py
@@ -154,7 +154,7 @@ class DefaultTablespaceTests(TransactionTestCase):
     def test_default_tablespace(self):
         tablespace = "default_tablespace"
         databases = copy.deepcopy(settings.DATABASES)
-        databases["default"]["OPTIONS"]["DEFAULT_TABLESPACE"] = tablespace
+        databases["default"]["DEFAULT_TABLESPACE"] = tablespace
         with self.settings(DATABASES=databases):
 
             class ScientistRef(models.Model):
@@ -170,7 +170,7 @@ class DefaultTablespaceTests(TransactionTestCase):
     def test_default_index_tablespace(self):
         index_tablespace = "default_index_tablespace"
         databases = copy.deepcopy(settings.DATABASES)
-        databases["default"]["OPTIONS"]["DEFAULT_INDEX_TABLESPACE"] = index_tablespace
+        databases["default"]["DEFAULT_INDEX_TABLESPACE"] = index_tablespace
         with self.settings(DATABASES=databases):
 
             class ScientistRef(models.Model):