diff --git a/lib/compat/wordpress-5.9/template-parts.php b/lib/compat/wordpress-5.9/template-parts.php
index ff91d574bfb4e7..102c9275be4085 100644
--- a/lib/compat/wordpress-5.9/template-parts.php
+++ b/lib/compat/wordpress-5.9/template-parts.php
@@ -12,8 +12,8 @@
  */
 
 // Only run any of the code in this file if the version is less than 5.9.
-// wp_is_block_theme was introduced in 5.9.
-if ( ! function_exists( 'wp_is_block_theme' ) ) {
+// wp_list_users was introduced in 5.9.
+if ( ! function_exists( 'wp_list_users' ) ) {
 	/**
 	 * Registers block editor 'wp_template_part' post type.
 	 */
diff --git a/lib/compat/wordpress-5.9/templates.php b/lib/compat/wordpress-5.9/templates.php
index 18f6f871adcf08..d5bdf1c55c4866 100644
--- a/lib/compat/wordpress-5.9/templates.php
+++ b/lib/compat/wordpress-5.9/templates.php
@@ -12,8 +12,8 @@
  */
 
 // Only run any of the code in this file if the version is less than 5.9.
-// wp_is_block_theme was introduced in 5.9.
-if ( ! function_exists( 'wp_is_block_theme' ) ) {
+// wp_list_users was introduced in 5.9.
+if ( ! function_exists( 'wp_list_users' ) ) {
 	/**
 	 * Registers block editor 'wp_template' post type.
 	 */