diff --git a/includes/admin/admin-notices.php b/includes/admin/admin-notices.php
index d5ac0bf..f325333 100644
--- a/includes/admin/admin-notices.php
+++ b/includes/admin/admin-notices.php
@@ -18,7 +18,7 @@
  * @param string $msg The message to display.
  * @return void
  */
-function mailchimp_sf_admin_notice_success( string $msg ): void {
+function mailchimp_sf_admin_notice_success( string $msg ) {
 	?>
 	<div class="notice notice-success is-dismissible">
 		<p>
@@ -54,7 +54,7 @@ function mailchimp_sf_admin_notice_success( string $msg ): void {
  * @param string $msg The message to display.
  * @return void
  */
-function mailchimp_sf_admin_notice_error( string $msg ): void {
+function mailchimp_sf_admin_notice_error( string $msg ) {
 	?>
 	<div class="notice notice-error">
 		<p>