diff --git a/src/wp-admin/customize.php b/src/wp-admin/customize.php
index 7f667d373d..f17bc2c10e 100644
--- a/src/wp-admin/customize.php
+++ b/src/wp-admin/customize.php
@@ -15,7 +15,7 @@ require_once( dirname( __FILE__ ) . '/admin.php' );
 if ( ! current_user_can( 'customize' ) ) {
 	wp_die(
 		'<h1>' . __( 'Cheatin&#8217; uh?' ) . '</h1>' .
-		'<p>' . __( 'You are not allowed to customize the appearance of this site.' ) . '</p>',
+		'<p>' . __( 'You are not allowed to customize this site.' ) . '</p>',
 		403
 	);
 }
diff --git a/src/wp-includes/class-wp-customize-manager.php b/src/wp-includes/class-wp-customize-manager.php
index 8057e57ae0..d414416624 100644
--- a/src/wp-includes/class-wp-customize-manager.php
+++ b/src/wp-includes/class-wp-customize-manager.php
@@ -387,7 +387,7 @@ final class WP_Customize_Manager {
 		show_admin_bar( false );
 
 		if ( ! current_user_can( 'customize' ) ) {
-			$this->wp_die( -1, __( 'You are not allowed to customize the appearance of this site.' ) );
+			$this->wp_die( -1, __( 'You are not allowed to customize this site.' ) );
 		}
 
 		$this->original_stylesheet = get_stylesheet();
diff --git a/src/wp-includes/script-loader.php b/src/wp-includes/script-loader.php
index 66080a835b..98b8a17252 100644
--- a/src/wp-includes/script-loader.php
+++ b/src/wp-includes/script-loader.php
@@ -443,7 +443,7 @@ function wp_default_scripts( &$scripts ) {
 		'cancel'             => __( 'Cancel' ),
 		'close'              => __( 'Close' ),
 		'cheatin'            => __( 'Cheatin&#8217; uh?' ),
-		'notAllowed'         => __( 'You are not allowed to customize the appearance of this site.' ),
+		'notAllowed'         => __( 'You are not allowed to customize this site.' ),
 		'previewIframeTitle' => __( 'Site Preview' ),
 		'loginIframeTitle'   => __( 'Session expired' ),
 		'collapseSidebar'    => __( 'Collapse Sidebar' ),