diff --git a/htdocs/admin/system/constall.php b/htdocs/admin/system/constall.php
index 4acb8e0ff59..dcf41aacf25 100644
--- a/htdocs/admin/system/constall.php
+++ b/htdocs/admin/system/constall.php
@@ -73,7 +73,6 @@ $configfileparameters = array(
 							'?dolibarr_main_auth_ldap_admin_pass',
 							'?dolibarr_main_auth_ldap_debug',
 							'separator',
-							'?dolibarr_lib_ADODB_PATH',
 							'?dolibarr_lib_FPDF_PATH',
 							'?dolibarr_lib_TCPDF_PATH',
 							'?dolibarr_lib_FPDI_PATH',
@@ -122,7 +121,6 @@ $configfilelib = array(
 					'dolibarr_main_auth_ldap_admin_pass',
 					'dolibarr_main_auth_ldap_debug',
 					'separator',
-					'dolibarr_lib_ADODB_PATH',
 					'dolibarr_lib_TCPDF_PATH',
 					'dolibarr_lib_FPDI_PATH',
 					'dolibarr_lib_NUSOAP_PATH',
diff --git a/htdocs/admin/system/dolibarr.php b/htdocs/admin/system/dolibarr.php
index 86c76ca1604..7fa1ef252cb 100644
--- a/htdocs/admin/system/dolibarr.php
+++ b/htdocs/admin/system/dolibarr.php
@@ -342,7 +342,6 @@ $configfileparameters = array(
 	'?dolibarr_main_auth_ldap_admin_pass' => 'dolibarr_main_auth_ldap_admin_pass',
 	'?dolibarr_main_auth_ldap_debug' => 'dolibarr_main_auth_ldap_debug',
 	'separator3' => '',
-	'?dolibarr_lib_ADODB_PATH' => 'dolibarr_lib_ADODB_PATH',
 	'?dolibarr_lib_FPDF_PATH' => 'dolibarr_lib_FPDF_PATH',
 	'?dolibarr_lib_TCPDF_PATH' => 'dolibarr_lib_TCPDF_PATH',
 	'?dolibarr_lib_FPDI_PATH' => 'dolibarr_lib_FPDI_PATH',
diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index de5a63df281..c7c699fc170 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -2638,6 +2638,9 @@ function dol_print_date($time, $format = '', $tzoutput = 'auto', $outputlangs =
 
 	$useadodb = getDolGlobalInt('MAIN_USE_LEGACY_ADODB_FOR_DATE', 0);
 	//$useadodb = 1;	// To switch to adodb
+	if (!empty($useadodb)) {
+		include_once DOL_DOCUMENT_ROOT.'/includes/adodbtime/adodb-time.inc.php';
+	}
 
 	// Analyze date
 	$reg = array();
diff --git a/htdocs/filefunc.inc.php b/htdocs/filefunc.inc.php
index ccd85e47810..54c7885e080 100644
--- a/htdocs/filefunc.inc.php
+++ b/htdocs/filefunc.inc.php
@@ -311,9 +311,6 @@ define('MAIN_DB_PREFIX', $dolibarr_main_db_prefix);
  * To use other version than embeded libraries, define here constant to path. Use '' to use include class path autodetect.
  */
 // Path to root libraries
-if (!defined('ADODB_PATH')) {
-	define('ADODB_PATH', (!isset($dolibarr_lib_ADODB_PATH)) ?DOL_DOCUMENT_ROOT.'/includes/adodbtime/' : (empty($dolibarr_lib_ADODB_PATH) ? '' : $dolibarr_lib_ADODB_PATH.'/'));
-}
 if (!defined('TCPDF_PATH')) {
 	define('TCPDF_PATH', (empty($dolibarr_lib_TCPDF_PATH)) ?DOL_DOCUMENT_ROOT.'/includes/tecnickcom/tcpdf/' : $dolibarr_lib_TCPDF_PATH.'/');
 }
@@ -354,10 +351,6 @@ if (!defined('DOL_DEFAULT_TTF_BOLD')) {
  * Include functions
  */
 
-if (!defined('ADODB_DATE_VERSION')) {
-	include_once ADODB_PATH.'adodb-time.inc.php';
-}
-
 // If password is encoded, we decode it. Note: When page is called for install, $dolibarr_main_db_pass may not be defined yet.
 if ((!empty($dolibarr_main_db_pass) && preg_match('/crypted:/i', $dolibarr_main_db_pass)) || !empty($dolibarr_main_db_encrypted_pass)) {
 	if (!empty($dolibarr_main_db_pass) && preg_match('/crypted:/i', $dolibarr_main_db_pass)) {
diff --git a/htdocs/install/inc.php b/htdocs/install/inc.php
index c717d55850e..e68f0d70a96 100644
--- a/htdocs/install/inc.php
+++ b/htdocs/install/inc.php
@@ -35,24 +35,16 @@ require_once '../filefunc.inc.php';
 
 
 
-// Define DOL_DOCUMENT_ROOT and ADODB_PATH used for install/upgrade process
+// Define DOL_DOCUMENT_ROOT used for install/upgrade process
 if (!defined('DOL_DOCUMENT_ROOT')) {
 	define('DOL_DOCUMENT_ROOT', '..');
 }
-if (!defined('ADODB_PATH')) {
-	$foundpath = DOL_DOCUMENT_ROOT.'/includes/adodbtime/';
-	if (!is_dir($foundpath)) {
-		$foundpath = '/usr/share/php/adodb/';
-	}
-	define('ADODB_PATH', $foundpath);
-}
 
 require_once DOL_DOCUMENT_ROOT.'/core/class/translate.class.php';
 require_once DOL_DOCUMENT_ROOT.'/core/class/conf.class.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/functions.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/admin.lib.php';
 require_once DOL_DOCUMENT_ROOT.'/core/lib/files.lib.php';
-require_once ADODB_PATH.'adodb-time.inc.php';
 
 $conf = new Conf();
 
diff --git a/htdocs/install/step1.php b/htdocs/install/step1.php
index 24b5dba4d01..7958012b0a1 100644
--- a/htdocs/install/step1.php
+++ b/htdocs/install/step1.php
@@ -825,7 +825,7 @@ function write_conf_file($conffile)
 	global $dolibarr_main_distrib;
 	global $db_host, $db_port, $db_name, $db_user, $db_pass, $db_type, $db_character_set, $db_collation;
 	global $conffile, $conffiletoshow, $conffiletoshowshort;
-	global $force_dolibarr_lib_ADODB_PATH, $force_dolibarr_lib_NUSOAP_PATH;
+	global $force_dolibarr_lib_NUSOAP_PATH;
 	global $force_dolibarr_lib_TCPDF_PATH, $force_dolibarr_lib_FPDI_PATH;
 	global $force_dolibarr_lib_GEOIP_PATH;
 	global $force_dolibarr_lib_ODTPHP_PATH, $force_dolibarr_lib_ODTPHP_PATHTOPCLZIP;
@@ -944,11 +944,6 @@ function write_conf_file($conffile)
 		}
 		fputs($fp, '$dolibarr_lib_TCPDI_PATH=\''.$force_dolibarr_lib_TCPDI_PATH.'\';');
 		fputs($fp, "\n");
-		if (empty($force_dolibarr_lib_ADODB_PATH)) {
-			fputs($fp, '//'); $force_dolibarr_lib_ADODB_PATH = '';
-		}
-		fputs($fp, '$dolibarr_lib_ADODB_PATH=\''.$force_dolibarr_lib_ADODB_PATH.'\';');
-		fputs($fp, "\n");
 		if (empty($force_dolibarr_lib_GEOIP_PATH)) {
 			fputs($fp, '//'); $force_dolibarr_lib_GEOIP_PATH = '';
 		}