diff --git a/src/wp-includes/class-wp-customize-panel.php b/src/wp-includes/class-wp-customize-panel.php
index e33a292818..d5441f6310 100644
--- a/src/wp-includes/class-wp-customize-panel.php
+++ b/src/wp-includes/class-wp-customize-panel.php
@@ -368,7 +368,7 @@ class WP_Customize_Panel {
 			<button class="customize-panel-back" tabindex="-1"><span class="screen-reader-text"><?php _e( 'Back' ); ?></span></button>
 			<div class="accordion-section-title">
 				<span class="preview-notice"><?php
-					/* translators: %s is the site/panel title in the Customizer */
+					/* translators: %s: the site/panel title in the Customizer */
 					echo sprintf( __( 'You are customizing %s' ), '<strong class="panel-title">{{ data.title }}</strong>' );
 				?></span>
 				<# if ( data.description ) { #>
diff --git a/src/wp-includes/customize/class-wp-customize-nav-menus-panel.php b/src/wp-includes/customize/class-wp-customize-nav-menus-panel.php
index e3be24b003..b581d56f1f 100644
--- a/src/wp-includes/customize/class-wp-customize-nav-menus-panel.php
+++ b/src/wp-includes/customize/class-wp-customize-nav-menus-panel.php
@@ -84,7 +84,7 @@ class WP_Customize_Nav_Menus_Panel extends WP_Customize_Panel {
 			<div class="accordion-section-title">
 				<span class="preview-notice">
 					<?php
-					/* Translators: %s is the site/panel title in the Customizer. */
+					/* translators: %s: the site/panel title in the Customizer */
 					printf( __( 'You are customizing %s' ), '<strong class="panel-title">{{ data.title }}</strong>' );
 					?>
 				</span>