diff --git a/core/lib/Drupal/Core/ImageToolkit/ImageToolkitInterface.php b/core/lib/Drupal/Core/ImageToolkit/ImageToolkitInterface.php
index 40eba96..2b86aef 100644
--- a/core/lib/Drupal/Core/ImageToolkit/ImageToolkitInterface.php
+++ b/core/lib/Drupal/Core/ImageToolkit/ImageToolkitInterface.php
@@ -166,8 +166,8 @@ public function save(ImageInterface $image, $destination);
    *   keyed array containing information about the image:
    *   - "width": Width, in pixels.
    *   - "height": Height, in pixels.
-   *   - "extension": Commonly used file extension for the image.
-   *   - "mime_type": MIME type ('image/jpeg', 'image/gif', 'image/png').
+   *   - "type": Image type represented as an IMAGETYPE_* constant.
+   *   - "mime_type": MIME type (e.g. 'image/jpeg', 'image/gif', 'image/png').
    *
    * @see \Drupal\Core\Image\ImageInterface::processInfo()
    */