diff --git a/src/wp-includes/kses.php b/src/wp-includes/kses.php
index bd288f7e64f4c..32e1797d7c4f2 100644
--- a/src/wp-includes/kses.php
+++ b/src/wp-includes/kses.php
@@ -1371,7 +1371,7 @@ function wp_kses_attr_parse( $element ) {
 	}
 
 	$tag_name     = strtolower( $p->get_tag() );
-	$attributes[] = "<{$tag_name}";
+	$attributes[] = "<{$tag_name} ";
 
 	foreach ( $p->get_attribute_names_with_prefix( '' ) as $name ) {
 		$value = $p->get_attribute( $name );