diff --git a/doc/src/sgml/ref/pg_createsubscriber.sgml b/doc/src/sgml/ref/pg_createsubscriber.sgml
index c5ee5f4..40b8fac 100644
--- a/doc/src/sgml/ref/pg_createsubscriber.sgml
+++ b/doc/src/sgml/ref/pg_createsubscriber.sgml
@@ -315,10 +315,10 @@ PostgreSQL documentation
    </para>
 
    <para>
-   Replication failures can occur if required WAL files are prematurely deleted.
-   To prevent this, the source server must set <xref
-   linkend="guc-max-slot-wal-keep-size"/>  to <literal>-1</literal>, ensuring
-   WAL files are not automatically removed.
+   Replication failures can occur if required WAL files are missing. To prevent
+   this, the source server must set <xref linkend="guc-max-slot-wal-keep-size"/>
+   to <literal>-1</literal> to ensure that required WAL files are not
+   prematurely removed.
    </para>
   </refsect2>