diff --git a/cache/classes/definition.php b/cache/classes/definition.php
index d7f758e111e..9d5c0a25b8f 100644
--- a/cache/classes/definition.php
+++ b/cache/classes/definition.php
@@ -832,7 +832,7 @@ class cache_definition {
      * Please call {@link cache_definition::get_static_acceleration_size()} instead.
      *
      * @see cache_definition::get_static_acceleration_size()
-     * @deprecated since 2.6
+     * @deprecated since 2.5.3
      * @return int
      */
     public function get_persistent_max_size() {
diff --git a/cache/classes/factory.php b/cache/classes/factory.php
index c0676975fe6..139239e59eb 100644
--- a/cache/classes/factory.php
+++ b/cache/classes/factory.php
@@ -307,7 +307,7 @@ class cache_factory {
 
     /**
      * Returns the cache instances that have been used within this request.
-     * @since 2.6
+     * @since 2.5.3
      * @return array
      */
     public function get_caches_in_use() {
diff --git a/cache/upgrade.txt b/cache/upgrade.txt
index 351519f9184..bf2838d22de 100644
--- a/cache/upgrade.txt
+++ b/cache/upgrade.txt
@@ -1,7 +1,7 @@
 This files describes API changes in /cache/stores/* - cache store plugins.
 Information provided here is intended especially for developers.
 
-=== 2.6 ===
+=== 2.5.3 ===
 * All cache instances are recorded and subsequent requests are given a reference to the original instance.
 * The persistent option for the cache definition has been deprecated. Please use the staticacceleration option instead.
 * There is a new static acceleration option. If enabled data passing through the cache is held onto.
@@ -13,4 +13,4 @@ Information provided here is intended especially for developers.
 * cleanup method renamed to instance_deleted.
   It is now called when the store is deleted as all comments suggested anyway.
 * instance_created method added.
-  It is called when the store is created for the very first time.
\ No newline at end of file
+  It is called when the store is created for the very first time.
diff --git a/lib/db/caches.php b/lib/db/caches.php
index 538216f3693..d0f75d6d20e 100644
--- a/lib/db/caches.php
+++ b/lib/db/caches.php
@@ -104,7 +104,7 @@ $definitions = array(
         'simplekeys' => true, // The course id the groupings exist for.
         'simpledata' => true, // Array of stdClass objects containing only strings.
         'staticacceleration' => true, // Likely there will be a couple of calls to this.
-        'persistmaxsize' => 2, // The original cache used 1, we've increased that to two.
+        'staticaccelerationsize' => 2, // The original cache used 1, we've increased that to two.
     ),
 
     // Used to cache calendar subscriptions.
@@ -129,8 +129,8 @@ $definitions = array(
         'mode' => cache_store::MODE_APPLICATION,
         'simplekeys' => true, // 0 or 1 depending on the requested location type.
         'simpledata' => true, // Array of strings.
-        'persistent' => true, // Likely there will be a couple of calls to this.
-        'persistmaxsize' => 2, // Both arrays should stay loaded in memory.
+        'staticacceleration' => true, // Likely there will be a couple of calls to this.
+        'staticaccelerationsize' => 2, // Both arrays should stay loaded in memory.
     ),
 
     // Cache for the list of installed plugins - {@see get_plugin_list()}.