diff --git a/docs/sample_interface/sample_schema.js b/docs/sample_interface/sample_schema.js
index 749b4a7..b2c964f 100644
--- a/docs/sample_interface/sample_schema.js
+++ b/docs/sample_interface/sample_schema.js
@@ -1327,6 +1327,7 @@ var dataModel = {
                                     "type":"array",
                                     "items":
                                     {
+                                        "type": "string",
                                         "enum":
                                         [
                                             "None",