diff --git a/src/wp-includes/widgets/class-wp-widget-recent-posts.php b/src/wp-includes/widgets/class-wp-widget-recent-posts.php
index a81474fb0c..0d4606ea16 100644
--- a/src/wp-includes/widgets/class-wp-widget-recent-posts.php
+++ b/src/wp-includes/widgets/class-wp-widget-recent-posts.php
@@ -107,7 +107,7 @@ class WP_Widget_Recent_Posts extends WP_Widget {
 	 */
 	public function update( $new_instance, $old_instance ) {
 		$instance = $old_instance;
-		$instance['title'] = santize_text_field( $new_instance['title'] );
+		$instance['title'] = sanitize_text_field( $new_instance['title'] );
 		$instance['number'] = (int) $new_instance['number'];
 		$instance['show_date'] = isset( $new_instance['show_date'] ) ? (bool) $new_instance['show_date'] : false;
 		$this->flush_widget_cache();