diff --git a/phpBB/install/convertors/functions_phpbb20.php b/phpBB/install/convertors/functions_phpbb20.php
index 443855403b..db1fe7ea8d 100644
--- a/phpBB/install/convertors/functions_phpbb20.php
+++ b/phpBB/install/convertors/functions_phpbb20.php
@@ -1203,6 +1203,7 @@ function phpbb_prepare_message($message)
 	if (strpos($message, '[quote=') !== false)
 	{
 		$message = preg_replace('/\[quote="(.*?)"\]/s', '[quote="\1"]', $message);
+		$message = preg_replace('/\[quote=\\\"(.*?)\\\"\]/s', '[quote="\1"]', $message);
 	}
 
 	// Already the new user id ;)