diff --git a/js/server/modules/org/arangodb/foxx/model.js b/js/server/modules/org/arangodb/foxx/model.js
index 079b398929..d3c676ecb8 100644
--- a/js/server/modules/org/arangodb/foxx/model.js
+++ b/js/server/modules/org/arangodb/foxx/model.js
@@ -161,25 +161,26 @@ _.extend(Model, {
     if (this.prototype.schema) {
       _.each(this.prototype.schema, function (schema, attributeName) {
         var description = schema.describe(),
-          type = description.type,
+          jsonSchema = {type: description.type},
           rules = description.rules,
           flags = description.flags;
 
         if (flags && flags.presence === 'required') {
+          jsonSchema.required = true;
           required.push(attributeName);
         }
 
         if (
-          type === 'number' &&
+          jsonSchema.type === 'number' &&
             _.isArray(rules) &&
             _.some(rules, function (rule) {
               return rule.name === 'integer';
             })
         ) {
-          type = 'integer';
+          jsonSchema.type = 'integer';
         }
 
-        properties[attributeName] = {type: type};
+        properties[attributeName] = jsonSchema;
       });
     } else {
       // deprecated