diff --git a/core/modules/migrate/src/Row.php b/core/modules/migrate/src/Row.php
index 6b6f1ad9d04b420c40a85985c02c1847f6c801bd..3d961902bcdec3018b251dcc3c45dd72119c0d5a 100644
--- a/core/modules/migrate/src/Row.php
+++ b/core/modules/migrate/src/Row.php
@@ -157,10 +157,11 @@ public function getSourceProperty($property) {
   }
 
   /**
-   * Returns the whole source array.
+   * Retrieves all source properties.
    *
    * @return array
-   *   An array of source plugins.
+   *   An array containing all source property values, keyed by the property
+   *   name.
    */
   public function getSource() {
     return $this->source;