diff --git a/doc/guide/dhcp4-srv.xml b/doc/guide/dhcp4-srv.xml
index 93e394c37f..bbc95f75c0 100644
--- a/doc/guide/dhcp4-srv.xml
+++ b/doc/guide/dhcp4-srv.xml
@@ -425,8 +425,8 @@ by a comma and another object definition.</para>
   <para>Lease file cleanup is performed by a separate process (in the background) to avoid
   a performance impact on the server process. To avoid the conflicts
   between two processes both using the same lease files, the LFC process
-  operates on the copy of the original lease file, rather than on the lease
-  file used by the server to record lease updates. There are also other files
+  starts with Kea opening new lease file and the actual LFC process
+  operates on the lease file that is no longer used by the server. There are also other files
   created as a side effect of the lease file cleanup. The detailed
   description of the LFC is located later in this Kea Administrator's Reference Manual:
   <xref linkend="kea-lfc" />.</para>
diff --git a/doc/guide/dhcp6-srv.xml b/doc/guide/dhcp6-srv.xml
index 7756d46936..531414ac89 100644
--- a/doc/guide/dhcp6-srv.xml
+++ b/doc/guide/dhcp6-srv.xml
@@ -414,8 +414,8 @@ by a comma and another object definition.</para>
   <para>Lease file cleanup is performed by a separate process (in the background) to avoid
   a performance impact on the server process. To avoid the conflicts
   between two processes both using the same lease files, the LFC process
-  operates on the copy of the original lease file, rather than on the lease
-  file used by the server to record lease updates. There are also other files
+  starts with Kea opening new lease file and the actual LFC process
+  operates on the lease file that is no longer used by the server. There are also other files
   created as a side effect of the lease file cleanup. The detailed
   description of the LFC is located later in this Kea Administrator's Reference Manual:
   <xref linkend="kea-lfc" />.</para>