diff --git a/htdocs/main.inc.php b/htdocs/main.inc.php
index 359a7ea27a1..7a097893b39 100644
--- a/htdocs/main.inc.php
+++ b/htdocs/main.inc.php
@@ -1493,10 +1493,13 @@ function top_menu($head, $title='', $target='', $disablejs=0, $disablehead=0, $a
 		$result=$hookmanager->executeHooks('printTopRightMenu',$parameters);    // Note that $action and $object may have been modified by some hooks
 		if (is_numeric($result))
 		{
-			if (empty($result)) $toprightmenu.=$hookmanager->resPrint;		// add
-			else  $toprightmenu=$hookmanager->resPrint;						// replace
+			if ($result== 0)
+				$toprightmenu.=$hookmanager->resPrint;		// add
+			else
+				$toprightmenu=$hookmanager->resPrint;						// replace
 		}
-		else $toprightmenu.=$result;	// For backward compatibility
+		else 
+			$toprightmenu.=$result;	// For backward compatibility
 
 		// Link to module builder
 		if (! empty($conf->modulebuilder->enabled))