diff --git a/htdocs/core/lib/functions2.lib.php b/htdocs/core/lib/functions2.lib.php
index 00f7e6d3ecb..94cb81306af 100644
--- a/htdocs/core/lib/functions2.lib.php
+++ b/htdocs/core/lib/functions2.lib.php
@@ -3129,6 +3129,8 @@ function printCodeForPing($constanttosavelastko, $constanttosavefirstok, $arrayo
 	global $dolibarr_distrib;
 	global $db, $conf;
 
+	require_once DOL_DOCUMENT_ROOT.'/blockedlog/lib/blockedlog.lib.php';
+
 	$algo = 'sha256';
 	$hash_unique_id = getHashUniqueIdOfRegistration($algo);
 
diff --git a/htdocs/install/step2.php b/htdocs/install/step2.php
index f485650eabb..a1a00e61d64 100644
--- a/htdocs/install/step2.php
+++ b/htdocs/install/step2.php
@@ -39,6 +39,7 @@ include 'inc.php';
  * @var string	$dolibarr_main_instance_unique_id
  */
 
+require_once $dolibarr_main_document_root.'/blockedlog/lib/blockedlog.lib.php';
 require_once $dolibarr_main_document_root.'/core/class/conf.class.php';
 require_once $dolibarr_main_document_root.'/core/lib/admin.lib.php';
 require_once $dolibarr_main_document_root.'/core/lib/security.lib.php';
diff --git a/htdocs/main.inc.php b/htdocs/main.inc.php
index 867dceb8306..c058ea06af2 100644
--- a/htdocs/main.inc.php
+++ b/htdocs/main.inc.php
@@ -3765,6 +3765,8 @@ if (!function_exists("llxFooter")) {
 		$forceping = GETPOSTINT('forceping');
 
 		if (($_SERVER["PHP_SELF"] == DOL_URL_ROOT.'/index.php') || $forceping) {
+			require_once DOL_DOCUMENT_ROOT.'/blockedlog/lib/blockedlog.lib.php';
+
 			$hash_unique_id_ping = getHashUniqueIdOfRegistration('sha256');
 			$constanttosavelastko = 'MAIN_LAST_PING_KO_DATE';
 			$constanttosavefirstok = 'MAIN_FIRST_PING_OK_DATE';
@@ -3802,7 +3804,8 @@ if (!function_exists("llxFooter")) {
 		$forceregistration = GETPOSTINT('forceregistration');
 
 		if (isModEnabled('blockedlog') && (($_SERVER["PHP_SELF"] == DOL_URL_ROOT.'/index.php') || $forceregistration)) {
-			include_once DOL_DOCUMENT_ROOT.'/blockedlog/lib/blockedlog.lib.php';
+			require_once DOL_DOCUMENT_ROOT.'/blockedlog/lib/blockedlog.lib.php';
+
 			if (!isALNEQualifiedVersion()) {
 				print "\n<!-- NO JS CODE TO ENABLE the registration. Not a LNE qualified version -->\n";
 			} elseif (!isRegistrationDataSaved()) {