diff --git a/src/schema.js b/src/schema.js
index cee7ff8..c920c81 100644
--- a/src/schema.js
+++ b/src/schema.js
@@ -201,6 +201,10 @@ export default class DataStructureGenerator {
         element.description = new StringElement(schema.description);
       }
 
+      if (schema['x-nullable']) {
+        element.attributes.set('typeAttributes', ['nullable']);
+      }
+
       let def = schema.default;
 
       if (def !== undefined && !_.isArray(def) && !_.isObject(def)) {
diff --git a/test/schema.js b/test/schema.js
index 2d05660..fee7f23 100644
--- a/test/schema.js
+++ b/test/schema.js
@@ -786,4 +786,17 @@ describe('JSON Schema to Data Structure', () => {
 
     expect(dataStructure).to.be.null;
   });
+
+  it('adds nullable typeAttribute with x-nullable extension', () => {
+    const schema = {
+      type: 'string',
+      'x-nullable': true,
+    };
+
+    const dataStructure = schemaToDataStructure(schema);
+
+    expect(dataStructure.element).to.equal('dataStructure');
+    expect(dataStructure.content).to.be.instanceof(StringElement);
+    expect(dataStructure.content.attributes.getValue('typeAttributes')).to.deep.equal(['nullable']);
+  });
 });