diff --git a/functions/dir.xml b/functions/dir.xml
index 2a23e51b18..95a82c3943 100644
--- a/functions/dir.xml
+++ b/functions/dir.xml
@@ -126,7 +126,7 @@ $d->close();
 $handle=opendir('.');
 echo "Directory handle: $handle\n";
 echo "Files:\n";
-while ($file = readdir($handle)) {
+while (($file = readdir($handle))!==false) {
     echo "$file\n";
 }
 closedir($handle); 
@@ -145,7 +145,7 @@ closedir($handle);
       <programlisting role="php">
 &lt;?php 
 $handle=opendir('.'); 
-while ($file = readdir($handle)) { 
+while (false!==($file = readdir($handle))) { 
     if ($file != "." &amp;&amp; $file != "..") { 
         echo "$file\n"; 
     }