diff --git a/src/components/Schema/OneOfSchema.tsx b/src/components/Schema/OneOfSchema.tsx
index 6cb52bfb..34230dc2 100644
--- a/src/components/Schema/OneOfSchema.tsx
+++ b/src/components/Schema/OneOfSchema.tsx
@@ -14,6 +14,8 @@ export interface OneOfButtonProps {
   idx: number;
   schema: SchemaModel;
 }
+
+@observer
 export class OneOfButton extends React.PureComponent<OneOfButtonProps> {
   render() {
     const { idx, schema, subSchema } = this.props;