diff --git a/core/config.class.inc.php b/core/config.class.inc.php
index 1e6676564..88c5cf16b 100644
--- a/core/config.class.inc.php
+++ b/core/config.class.inc.php
@@ -388,7 +388,7 @@ class Config
 		'log_filename_builder_impl' => array(
 			'type' => 'string',
 			'description' => 'Name of the ILogFileNameBuilder to use',
-			'default' => 'DailyRotatingLogFileNameBuilder',
+			'default' => 'WeeklyRotatingLogFileNameBuilder',
 			'value' => '',
 			'source_of_value' => '',
 			'show_in_conf_sample' => false,
diff --git a/core/log.class.inc.php b/core/log.class.inc.php
index 3004d7fb5..c2db00c87 100644
--- a/core/log.class.inc.php
+++ b/core/log.class.inc.php
@@ -87,6 +87,20 @@ class DailyRotatingLogFileNameBuilder extends RotatingLogFileNameBuilder
 	}
 }
 
+/**
+ * @since 2.7.0 N°2518
+ */
+class WeeklyRotatingLogFileNameBuilder extends RotatingLogFileNameBuilder
+{
+	protected function GetFileSuffix()
+	{
+		$sWeekYear = date('o');
+		$sWeekNumber = date('W');
+
+		return $sWeekYear.'-week'.$sWeekNumber;
+	}
+}
+
 /**
  * @since 2.7.0 N°2518
  */