diff --git a/htdocs/core/db/mysql.class.php b/htdocs/core/db/mysql.class.php
index 30a7780afdf..bca6d0798b8 100644
--- a/htdocs/core/db/mysql.class.php
+++ b/htdocs/core/db/mysql.class.php
@@ -28,6 +28,8 @@ require_once DOL_DOCUMENT_ROOT .'/core/db/DoliDB.class.php';
 
 /**
  *	Class to manage Dolibarr database access for a MySQL database using the mysql extension
+ *
+ * @deprecated Use DoliDBMysqli
  */
 class DoliDBMysql extends DoliDB
 {
diff --git a/htdocs/install/fileconf.php b/htdocs/install/fileconf.php
index 97a52ff6c34..04f8a3caf4c 100644
--- a/htdocs/install/fileconf.php
+++ b/htdocs/install/fileconf.php
@@ -328,8 +328,9 @@ if (! empty($force_install_message))
 		            $option.='>';
 		            $option.=$type.'   ';
 		            if ($note) $option.=' '.$note;
-		            // Experimental
-		            if ($type=='mssql')  $option.=' '.$langs->trans("Experimental");
+		            // Deprecated and experimental
+					if ($type=='mysql') $option.=' ' . $langs->trans("Deprecated");
+		            elseif ($type=='mssql')  $option.=' '.$langs->trans("Experimental");
 		            elseif ($type=='sqlite') $option.=' '.$langs->trans("Experimental");
 		            elseif ($type=='sqlite3') $option.=' '.$langs->trans("Experimental");
 		            // No available
diff --git a/htdocs/langs/en_US/install.lang b/htdocs/langs/en_US/install.lang
index 7de123d5ea3..0c61ce35e2e 100644
--- a/htdocs/langs/en_US/install.lang
+++ b/htdocs/langs/en_US/install.lang
@@ -64,6 +64,7 @@ DatabaseSuperUserAccess=Database server - Superuser access
 CheckToCreateDatabase=Check box if database does not exist and must be created.<br>In this case, you must fill the login/password for superuser account at the bottom of this page.
 CheckToCreateUser=Check box if database owner does not exist and must be created.<br>In this case, you must choose its login and password and also fill the login/password for the superuser account at the bottom of this page. If this box is unchecked, owner database and its passwords must exists.
 Experimental=(experimental)
+Deprecated=(deprecated)
 DatabaseRootLoginDescription=Login of the user allowed to create new databases or new users, mandatory if your database or its owner does not already exists.
 KeepEmptyIfNoPassword=Leave empty if user has no password (avoid this)
 SaveConfigurationFile=Save values
@@ -211,4 +212,4 @@ MigrationCategorieAssociation=Migration of categories
 MigrationEvents=Migration of events to add event owner into assignement table
 
 ShowNotAvailableOptions=Show not available options
-HideNotAvailableOptions=Hide not available options
\ No newline at end of file
+HideNotAvailableOptions=Hide not available options