diff --git a/core/lib/Drupal/Core/Config/Schema/Sequence.php b/core/lib/Drupal/Core/Config/Schema/Sequence.php
index afa3ed3bb0..547969bbcc 100644
--- a/core/lib/Drupal/Core/Config/Schema/Sequence.php
+++ b/core/lib/Drupal/Core/Config/Schema/Sequence.php
@@ -12,10 +12,10 @@
  * schema, types and type resolution.
  *
  * Note that sequences implement the typed data ComplexDataInterface (via the
- * parent ArrayElement) rather than the ListInterface. This is, as sequences
- * have named keys, what is not covered by lists. From the typed data API
- * perspective sequences are handled as ordered mappings without metadata about
- * existing properties.
+ * parent ArrayElement) rather than the ListInterface. This is because sequences
+ * may have named keys, which is not supported by ListInterface. From the typed
+ * data API perspective sequences are handled as ordered mappings without
+ * metadata about existing properties.
  */
 class Sequence extends ArrayElement {