diff --git a/deployments/db.js b/deployments/db.js
index 246a7c63..4f2ae10a 100644
--- a/deployments/db.js
+++ b/deployments/db.js
@@ -130,7 +130,7 @@ db.createCollection( "polling_detail", {
                     bsonType: "object"
                 },
                 response_code: {
-                    bsonType: "string"
+                    bsonType: "number"
                 }
             }
         } }