diff --git a/core/autoload/projects.el b/core/autoload/projects.el
index e8ee56312..b1d5a3ab2 100644
--- a/core/autoload/projects.el
+++ b/core/autoload/projects.el
@@ -1,5 +1,7 @@
 ;;; core/autoload/projects.el -*- lexical-binding: t; -*-
 
+(defvar projectile-project-root nil)
+
 ;;;###autoload
 (autoload 'projectile-relevant-known-projects "projectile")