diff --git a/blocks/glossary_random/block_glossary_random.php b/blocks/glossary_random/block_glossary_random.php
index 795fe518079..855ae7df571 100644
--- a/blocks/glossary_random/block_glossary_random.php
+++ b/blocks/glossary_random/block_glossary_random.php
@@ -226,5 +226,17 @@ class block_glossary_random extends block_base {
         return false;
     }
 
+    /**
+     * Executed after block instance has been created, we use it to recode
+     * the glossary config setting to point to the new (restored) one
+     */
+    function after_restore($restore) {
+    /// We need to transform the glossary->id from the original one to the restored one
+        if ($rec = backup_getid($restore->backup_unique_code, 'glossary', $this->config->glossary)) {
+            $this->config->glossary = $rec->new_id;
+            $this->instance_config_commit();
+        }
+    }
+
 }
 ?>