diff --git a/main.go b/main.go
index 5a73615..7a1f795 100644
--- a/main.go
+++ b/main.go
@@ -47,6 +47,8 @@ func main() {
 		log.WithError(err).Fatal("Unable to setup new compiler")
 	}
 
+	c.DefineVariable("filepath", "")
+
 	loadRules(c)
 
 	rules, err := c.GetRules()