diff --git a/includes/class-mailchimp-admin.php b/includes/class-mailchimp-admin.php
index b405917..0a70f5d 100644
--- a/includes/class-mailchimp-admin.php
+++ b/includes/class-mailchimp-admin.php
@@ -306,8 +306,23 @@ public function verify_and_save_oauth_token( $access_token, $data_center ) {
 			update_option( 'mailchimp_sf_access_token', $data_encryption->encrypt( $access_token ) );
 			update_option( 'mc_datacenter', sanitize_text_field( $data_center ) );
 			update_option( 'mc_user', $this->sanitize_data( $user ) );
-			return true;
 
+			// Clear Mailchimp List ID if saved list is not available.
+			$lists = $api->get( 'lists', 100, array( 'fields' => 'lists.id' ) );
+			if ( ! is_wp_error( $lists ) ) {
+				$lists         = $lists['lists'] ?? array();
+				$saved_list_id = get_option( 'mc_list_id' );
+				$list_ids      = array_map(
+					function ( $ele ) {
+						return $ele['id'];
+					},
+					$lists
+				);
+				if ( ! in_array( $saved_list_id, $list_ids, true ) ) {
+					delete_option( 'mc_list_id' );
+				}
+			}
+			return true;
 		} else {
 			$msg = esc_html__( 'API Key must belong to "Owner", "Admin", or "Manager."', 'mailchimp' );
 			return new WP_Error( 'mailchimp-sf-invalid-role', $msg );
diff --git a/mailchimp.php b/mailchimp.php
index ddd0bee..12c7e60 100644
--- a/mailchimp.php
+++ b/mailchimp.php
@@ -217,7 +217,7 @@ function mailchimp_sf_request_handler() {
 				}
 
 				// erase auth information
-				$options = array( 'mc_api_key', 'mailchimp_sf_access_token', 'mc_datacenter', 'mailchimp_sf_auth_error', 'mailchimp_sf_waiting_for_login', 'mc_sopresto_user', 'mc_sopresto_public_key', 'mc_sopresto_secret_key', 'mc_list_id' );
+				$options = array( 'mc_api_key', 'mailchimp_sf_access_token', 'mc_datacenter', 'mailchimp_sf_auth_error', 'mailchimp_sf_waiting_for_login', 'mc_sopresto_user', 'mc_sopresto_public_key', 'mc_sopresto_secret_key' );
 				mailchimp_sf_delete_options( $options );
 				break;
 			case 'change_form_settings':