diff --git a/src/wp-includes/script-loader.php b/src/wp-includes/script-loader.php
index 956d4338ef..27defd0659 100644
--- a/src/wp-includes/script-loader.php
+++ b/src/wp-includes/script-loader.php
@@ -1287,7 +1287,7 @@ function wp_default_scripts( $scripts ) {
 			'invalidValue'            => __( 'Invalid value.' ),
 			'blockThemeNotification'  => sprintf(
 				/* translators: 1: Link to Site Editor documentation on HelpHub, 2: HTML button. */
-				__( 'Hurray! Your theme supports Site Editing with blocks. <a href="%1$s">Tell me more</a>. %2$s' ),
+				__( 'Hurray! Your theme supports site editing with blocks. <a href="%1$s">Tell me more</a>. %2$s' ),
 				__( 'https://wordpress.org/support/article/site-editor/' ),
 				sprintf(
 					'<button type="button" data-action="%1$s" class="button switch-to-editor">%2$s</button>',