diff --git a/wp-admin/network.php b/wp-admin/network.php
index 5817ac25fd..114a09a780 100644
--- a/wp-admin/network.php
+++ b/wp-admin/network.php
@@ -361,7 +361,7 @@ define( 'BLOG_ID_CURRENT_SITE', 1 );</textarea>
 		echo _n( 'This unique authentication key is also missing from your <code>wp-config.php</code> file.', 'These unique authentication keys are also missing from your <code>wp-config.php</code> file.', $num_keys_salts ); ?> <?php _e( 'To make your installation more secure, you should also add:' ) ?></p>
 	<textarea class="code" readonly="readonly" cols="100" rows="<?php echo $num_keys_salts; ?>"><?php
 	foreach ( $keys_salts as $c => $v ) {
-		echo "\ndefine( '$c', '$v' );";
+		echo "\ndefine( '$c', '" . wp_htmledit_pre( $v ) . "' );";
 	}
 ?></textarea>
 <?php