diff --git a/www/include/configuration/configObject/host/listHost.php b/www/include/configuration/configObject/host/listHost.php
index e634bc8d6f0..76df6c18241 100644
--- a/www/include/configuration/configObject/host/listHost.php
+++ b/www/include/configuration/configObject/host/listHost.php
@@ -62,6 +62,7 @@
 $DBRESULT->closeCursor();
 
 if (isset($_POST["searchH"])) {
+    $num = 0;
     $search = $_POST["searchH"];
     $centreon->historySearch[$url] = $search;
 } elseif (isset($_GET["searchH"])) {