diff --git a/migrate_example/README.txt b/migrate_example/README.txt
index d9a12dc60bd43b954cfd4438a54483fa5e51fb70..125e3b0f6300ac1d4f9cfc74ca234231e02bdd75 100644
--- a/migrate_example/README.txt
+++ b/migrate_example/README.txt
@@ -24,7 +24,10 @@ There are two primary components to this example:
 
 1. Migration configuration, in the config/install directory. These YAML files
    describe the migration process and provide the mappings from the source data
-   to Drupal's destination entities.
+   to Drupal's destination entities. The YAML file names are prefixed with
+   'migrate_plus.migration.' (because, reading from right to left, they define
+   "migration" configuration entities, and the configuration entity type is
+   defined by the "migrate_plus" module).
 
 2. Source plugins, in src/Plugin/migrate/source. These are referenced from the
    configuration files, and provide the source data to the migration processing
@@ -38,13 +41,13 @@ the concepts described in a more-or-less narrative form, it is recommended you
 read the files in the following order:
 
 1. migrate_plus.migration_group.beer.yml
-2. migrate.migration.beer_term.yml
+2. migrate_plus.migration.beer_term.yml
 3. BeerTerm.php
-4. migrate.migration.beer_user.yml
+4. migrate_plus.migration.beer_user.yml
 5. BeerUser.php
-6. migrate.migration.beer_node.yml
+6. migrate_plus.migration.beer_node.yml
 7. BeerNode.php
-8. migrate.migration.beer_comment.yml
+8. migrate_plus.migration.beer_comment.yml
 9. BeerComment.php
 
 RUNNING THE MIGRATIONS
diff --git a/migrate_example_advanced/README.txt b/migrate_example_advanced/README.txt
index 0c40344a94fec2ee098388b3b586b53f971037ac..8d5a25d807a250ed14fc38b95387f8aa8c1f01a0 100644
--- a/migrate_example_advanced/README.txt
+++ b/migrate_example_advanced/README.txt
@@ -51,8 +51,8 @@ up an XML migration. An index of things demonstrated by this module:
 
 Multiple vocabularies populated in one migration
 ------------------------------------------------
-See migrate.migration.wine_terms.yml.
+See migrate_plus.migration.wine_terms.yml.
 
 Importing from XML services
 ---------------------------
-See migrate.migration.wine_role_xml.yml.
+See migrate_plus.migration.wine_role_xml.yml.