diff --git a/specification/json/sections/cper-vtd-dmar.json b/specification/json/sections/cper-vtd-dmar.json
index aa6716d..baa5942 100644
--- a/specification/json/sections/cper-vtd-dmar.json
+++ b/specification/json/sections/cper-vtd-dmar.json
@@ -56,7 +56,7 @@
                 },
                 "type": {
                     "type": "object",
-                    "$ref": "../common/cper-json-nvp.json"
+                    "$ref": "./common/cper-json-nvp.json"
                 }
             }
         },