diff --git a/wp-admin/includes/nav-menu.php b/wp-admin/includes/nav-menu.php
index 8cc1de9719..df64c1abef 100644
--- a/wp-admin/includes/nav-menu.php
+++ b/wp-admin/includes/nav-menu.php
@@ -668,7 +668,7 @@ function wp_nav_menu_item_post_type_meta_box( $object, $post_type ) {
 			}
 			?>
 			<p class="quick-search-wrap">
-				<input type="text" class="quick-search regular-text input-with-default-title" title="<?php esc_attr_e('Search'); ?>" value="<?php echo $searched; ?>" name="quick-search-posttype-<?php echo $post_type_name; ?>" />
+				<input type="text" class="quick-search input-with-default-title" title="<?php esc_attr_e('Search'); ?>" value="<?php echo $searched; ?>" name="quick-search-posttype-<?php echo $post_type_name; ?>" />
 				<img class="waiting" src="<?php echo esc_url( admin_url( 'images/wpspin_light.gif' ) ); ?>" alt="" />
 				<?php submit_button( __( 'Search' ), 'quick-search-submit button-secondary hide-if-js', 'submit', false ); ?>
 			</p>
@@ -895,7 +895,7 @@ function wp_nav_menu_item_taxonomy_meta_box( $object, $taxonomy ) {
 			}
 			?>
 			<p class="quick-search-wrap">
-				<input type="text" class="quick-search regular-text input-with-default-title" title="<?php esc_attr_e('Search'); ?>" value="<?php echo $searched; ?>" name="quick-search-taxonomy-<?php echo $taxonomy_name; ?>" />
+				<input type="text" class="quick-search input-with-default-title" title="<?php esc_attr_e('Search'); ?>" value="<?php echo $searched; ?>" name="quick-search-taxonomy-<?php echo $taxonomy_name; ?>" />
 				<img class="waiting" src="<?php echo esc_url( admin_url( 'images/wpspin_light.gif' ) ); ?>" alt="" />
 				<?php submit_button( __( 'Search' ), 'quick-search-submit button-secondary hide-if-js', 'submit', false ); ?>
 			</p>