diff --git a/api/src/Session.php b/api/src/Session.php
index ac0b88a604..866b05bdce 100644
--- a/api/src/Session.php
+++ b/api/src/Session.php
@@ -1496,8 +1496,8 @@ class Session
 		}
 		// update dla in access-log table, if we have an access-log row (non-anonymous session)
 		if ($this->sessionid_access_log && $update_access_log &&
-			// ignore updates (session creation is written) of *dav and avatar, due to possible high volume of updates
-			!preg_match('#^(/webdav|/groupdav|/api/avatar)\.php#', $this->action) &&
+			// ignore updates (session creation is written) of *dav, avatar and thumbnail, due to possible high volume of updates
+			!preg_match('#^(/webdav|/groupdav|/api/avatar|/api/thumbnail)\.php#', $this->action) &&
 			is_object($GLOBALS['egw']->db))
 		{
 			$GLOBALS['egw']->db->update(self::ACCESS_LOG_TABLE,array(