diff --git a/datasette/app.py b/datasette/app.py
index 177debe2..45d34991 100644
--- a/datasette/app.py
+++ b/datasette/app.py
@@ -729,8 +729,10 @@ class Datasette:
         self.databases = new_databases
         return db
 
-    def add_memory_database(self, memory_name):
-        return self.add_database(Database(self, memory_name=memory_name))
+    def add_memory_database(self, memory_name, name=None, route=None):
+        return self.add_database(
+            Database(self, memory_name=memory_name), name=name, route=route
+        )
 
     def remove_database(self, name):
         self.get_database(name).close()
diff --git a/docs/internals.rst b/docs/internals.rst
index 468b3f95..2e01a8e8 100644
--- a/docs/internals.rst
+++ b/docs/internals.rst
@@ -781,8 +781,8 @@ Use ``is_mutable=False`` to add an immutable database.
 
 .. _datasette_add_memory_database:
 
-.add_memory_database(name)
---------------------------
+.add_memory_database(memory_name, name=None, route=None)
+--------------------------------------------------------
 
 Adds a shared in-memory database with the specified name:
 
@@ -800,7 +800,9 @@ This is a shortcut for the following:
         Database(datasette, memory_name="statistics")
     )
 
-Using either of these pattern will result in the in-memory database being served at ``/statistics``.
+Using either of these patterns will result in the in-memory database being served at ``/statistics``.
+
+The ``name`` and ``route`` parameters are optional and work the same way as they do for :ref:`datasette_add_database`.
 
 .. _datasette_remove_database:
 
diff --git a/tests/test_internals_datasette_client.py b/tests/test_internals_datasette_client.py
index 55f7392f..a15d294f 100644
--- a/tests/test_internals_datasette_client.py
+++ b/tests/test_internals_datasette_client.py
@@ -15,7 +15,7 @@ async def datasette_with_permissions():
     """A datasette instance with permission restrictions for testing"""
     ds = Datasette(config={"databases": {"test_db": {"allow": {"id": "admin"}}}})
     await ds.invoke_startup()
-    db = ds.add_memory_database("test_db")
+    db = ds.add_memory_database("test_datasette_with_permissions", name="test_db")
     await db.execute_write(
         "create table if not exists test_table (id integer primary key, name text)"
     )