diff --git a/src/Psalm/Config.php b/src/Psalm/Config.php
index a8352e12166..c610351eafb 100644
--- a/src/Psalm/Config.php
+++ b/src/Psalm/Config.php
@@ -70,6 +70,7 @@
 use function getcwd;
 use function chdir;
 use function simplexml_import_dom;
+use const LIBXML_NONET;
 
 class Config
 {