diff --git a/src/Form/ReCaptchaAdminSettingsForm.php b/src/Form/ReCaptchaAdminSettingsForm.php
index 9180f71868dc995fe0c2dc4f9b95c69cc519af52..2ea737175b466e8da6242c3c8048b23641a3ccf5 100644
--- a/src/Form/ReCaptchaAdminSettingsForm.php
+++ b/src/Form/ReCaptchaAdminSettingsForm.php
@@ -119,6 +119,7 @@ class ReCaptchaAdminSettingsForm extends ConfigFormBase {
       ->set('secret_key', $form_state->getValue('recaptcha_secret_key'))
       ->set('widget.theme', $form_state->getValue('recaptcha_theme'))
       ->set('widget.type', $form_state->getValue('recaptcha_type'))
+      ->set('widget.size', $form_state->getValue('recaptcha_size'))
       ->set('widget.tabindex', $form_state->getValue('recaptcha_tabindex'))
       ->set('widget.noscript', $form_state->getValue('recaptcha_noscript'))
       ->save();