diff --git a/graph_db/schemas/cwe_schema.json b/graph_db/schemas/cwe_schema.json
index bdd2f12..fbda382 100644
--- a/graph_db/schemas/cwe_schema.json
+++ b/graph_db/schemas/cwe_schema.json
@@ -58,7 +58,7 @@
                         },
                         "Note": {
                             "description": "",
-                            "type": "string"
+                            "type": ["string", "null"]
                         }
                     },
                     "required": ["Scope"]
@@ -85,4 +85,4 @@
         "datatype",
         "original_id"
      ]
-  }
\ No newline at end of file
+  }