diff --git a/wp-includes/theme.php b/wp-includes/theme.php
index df297a5634..bdd1ec3f60 100644
--- a/wp-includes/theme.php
+++ b/wp-includes/theme.php
@@ -3124,8 +3124,8 @@ function register_theme_feature( $feature, $args = array() ) {
 				'invalid_rest_prepare_callback',
 				sprintf(
 					/* translators: %s: prepare_callback */
-					__( 'The %s must be a callable function.' ),
-					'<code>prepare_callback<code>'
+					__( 'The "%s" must be a callable function.' ),
+					'prepare_callback'
 				)
 			);
 		}
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 4dee5617bc..ed5695fa27 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.5-beta3-48611';
+$wp_version = '5.5-beta3-48612';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.