diff --git a/src/wp-admin/includes/class-wp-upgrader.php b/src/wp-admin/includes/class-wp-upgrader.php
index 98e979d074..a59d39bf19 100644
--- a/src/wp-admin/includes/class-wp-upgrader.php
+++ b/src/wp-admin/includes/class-wp-upgrader.php
@@ -1439,7 +1439,7 @@ class WP_Automatic_Upgrader {
 
 	static function upgrader_disabled() {
 		// That's a no if you don't want files changes
-		if ( defined( 'DISABLE_FILE_MODS' ) && DISABLE_FILE_MODS )
+		if ( defined( 'DISALLOW_FILE_MODS' ) && DISALLOW_FILE_MODS )
 			return true;
 
 		// More fine grained control can be done through the WP_AUTO_UPDATE_CORE constant and filters