--- a/MySQL/Plugins/MySQLIndex.cpp	Mon Nov 13 20:37:04 2023 +0100
+++ b/MySQL/Plugins/MySQLIndex.cpp	Tue Nov 21 20:31:31 2023 +0100
@@ -237,7 +237,7 @@
         // to the LONGTEXT type (up to 4GB). This might be important
         // for applications such as the Osimis Web viewer that stores
         // large amount of metadata.
-        // http://book.orthanc-server.com/faq/features.html#central-registry-of-metadata-and-attachments
+        // https://orthanc.uclouvain.be/book/faq/features.html#central-registry-of-metadata-and-attachments
         t.GetDatabaseTransaction().ExecuteMultiLines("ALTER TABLE Metadata MODIFY value LONGTEXT");
         
         revision = 4;