diff --git a/reference/filesystem/functions/flock.xml b/reference/filesystem/functions/flock.xml
index 86e6d9b0ac..7974e46d7a 100644
--- a/reference/filesystem/functions/flock.xml
+++ b/reference/filesystem/functions/flock.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.17 $ -->
+<!-- $Revision: 1.18 $ -->
 <refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.flock">
  <refnamediv>
   <refname>flock</refname>
@@ -130,13 +130,14 @@
 <![CDATA[
 <?php
 
-$fp = fopen("/tmp/lock.txt", "w+");
+$fp = fopen("/tmp/lock.txt", "w");
 
 if (flock($fp, LOCK_EX)) { // do an exclusive lock
+    ftruncate($fp, 0);  // truncate file
     fwrite($fp, "Write something here\n");
     flock($fp, LOCK_UN); // release the lock
 } else {
-    echo "Couldn't lock the file !";
+    echo "Couldn't get the lock!";
 }
 
 fclose($fp);