diff --git a/src/components/formFields/importSubform/index.tsx b/src/components/formFields/importSubform/index.tsx
index b8285d0350aafe0bb41c3f697765a99b41d09cc6..88c8b0c3ac9db75dbdf0eddc5b5368800b467a4a 100644
--- a/src/components/formFields/importSubform/index.tsx
+++ b/src/components/formFields/importSubform/index.tsx
@@ -397,6 +397,7 @@ export default class ImportSubformField extends Field<ImportSubformFieldConfig,
                 label: formFieldConfig.label,
                 status,
                 message: (this.state.formData[formFieldIndex] || {}).message || '',
+                extra: (formFieldConfig as any).extra || null,
                 required: getBoolean(formFieldConfig.required),
                 layout: formLayout,
                 visitable: display,
diff --git a/src/steps/form/index.tsx b/src/steps/form/index.tsx
index dd21f0eef96f0e4e078a868c32504d9aca3d9190..d7a2b7c59d4d5b8c178114293aeaf6f1834ec2e9 100644
--- a/src/steps/form/index.tsx
+++ b/src/steps/form/index.tsx
@@ -141,6 +141,7 @@ export interface IFormItem {
   required: boolean
   description?: string
   message?: string
+  extra?: string
   layout: 'horizontal' | 'vertical' | 'inline'
   visitable: boolean
   fieldType: string