diff --git a/src/wp-admin/includes/meta-boxes.php b/src/wp-admin/includes/meta-boxes.php
index 1115213730..e7aa1c126f 100644
--- a/src/wp-admin/includes/meta-boxes.php
+++ b/src/wp-admin/includes/meta-boxes.php
@@ -505,14 +505,12 @@ function post_categories_meta_box( $post, $box ) {
 		</div>
 	<?php if ( current_user_can( $taxonomy->cap->edit_terms ) ) : ?>
 			<div id="<?php echo $tax_name; ?>-adder" class="wp-hidden-children">
-				<h4>
-					<a id="<?php echo $tax_name; ?>-add-toggle" href="#<?php echo $tax_name; ?>-add" class="hide-if-no-js">
-						<?php
-							/* translators: %s: add new taxonomy label */
-							printf( __( '+ %s' ), $taxonomy->labels->add_new_item );
-						?>
-					</a>
-				</h4>
+				<a id="<?php echo $tax_name; ?>-add-toggle" href="#<?php echo $tax_name; ?>-add" class="hide-if-no-js taxonomy-add-new">
+					<?php
+						/* translators: %s: add new taxonomy label */
+						printf( __( '+ %s' ), $taxonomy->labels->add_new_item );
+					?>
+				</a>
 				<p id="<?php echo $tax_name; ?>-add" class="category-add wp-hidden-child">
 					<label class="screen-reader-text" for="new<?php echo $tax_name; ?>"><?php echo $taxonomy->labels->add_new_item; ?></label>
 					<input type="text" name="new<?php echo $tax_name; ?>" id="new<?php echo $tax_name; ?>" class="form-required form-input-tip" value="<?php echo esc_attr( $taxonomy->labels->new_item_name ); ?>" aria-required="true"/>
@@ -941,7 +939,7 @@ function link_categories_meta_box($link) {
 	</div>
 
 	<div id="category-adder" class="wp-hidden-children">
-		<h4><a id="category-add-toggle" href="#category-add"><?php _e( '+ Add New Category' ); ?></a></h4>
+		<a id="category-add-toggle" href="#category-add" class="taxonomy-add-new"><?php _e( '+ Add New Category' ); ?></a>
 		<p id="link-category-add" class="wp-hidden-child">
 			<label class="screen-reader-text" for="newcat"><?php _e( '+ Add New Category' ); ?></label>
 			<input type="text" name="newcat" id="newcat" class="form-required form-input-tip" value="<?php esc_attr_e( 'New category name' ); ?>" aria-required="true" />