diff --git a/htdocs/blockedlog/admin/blockedlog_list.php b/htdocs/blockedlog/admin/blockedlog_list.php
index f618042c994..3612343280a 100644
--- a/htdocs/blockedlog/admin/blockedlog_list.php
+++ b/htdocs/blockedlog/admin/blockedlog_list.php
@@ -73,6 +73,15 @@ $block_static = new BlockedLog($db);
 $result = restrictedArea($user, 'blockedlog', 0, '');
 
 
+$max_execution_time_for_importexport = (empty($conf->global->EXPORT_MAX_EXECUTION_TIME) ? 300 : $conf->global->EXPORT_MAX_EXECUTION_TIME); // 5mn if not defined
+$max_time = @ini_get("max_execution_time");
+if ($max_time && $max_time < $max_execution_time_for_importexport)
+{
+	dol_syslog("max_execution_time=".$max_time." is lower than max_execution_time_for_importexport=".$max_execution_time_for_importexport.". We try to increase it dynamically.");
+	@ini_set("max_execution_time", $max_execution_time_for_importexport); // This work only if safe mode is off. also web servers has timeout of 300
+}
+
+
 /*
  * Actions
  */