diff --git a/core/lib/Drupal/Core/Config/Entity/ConfigEntityStorage.php b/core/lib/Drupal/Core/Config/Entity/ConfigEntityStorage.php
index 2784ea8..2d773dc 100644
--- a/core/lib/Drupal/Core/Config/Entity/ConfigEntityStorage.php
+++ b/core/lib/Drupal/Core/Config/Entity/ConfigEntityStorage.php
@@ -46,8 +46,8 @@ class ConfigEntityStorage extends EntityStorageBase implements ConfigEntityStora
    * ConfigBase::MAX_NAME_LENGTH restricts the full configuration object name
    * to 250 characters (leaving 5 for the file extension). The config prefix
    * is limited by ConfigEntityType::PREFIX_LENGTH to 83 characters, so this
-   * leaves 166 remaining characters for the configuration entity ID and the
-   * joining dot.
+   * leaves 166 remaining characters for the configuration entity ID, with 1
+   * additional character needed for the joining dot.
    *
    * @see \Drupal\Core\Config\ConfigBase::MAX_NAME_LENGTH
    * @see \Drupal\Core\Config\Entity\ConfigEntityType::PREFIX_LENGTH