diff --git a/e107_handlers/form_handler.php b/e107_handlers/form_handler.php
index fb5d53c31..2fe90dda4 100644
--- a/e107_handlers/form_handler.php
+++ b/e107_handlers/form_handler.php
@@ -509,6 +509,7 @@ class e_form
 			<ul class="nav nav-tabs">';
 
 		$c = 0;
+
 		foreach($array as $key=>$tab)
 		{
 
@@ -5472,7 +5473,7 @@ class e_form
 
 			$query = isset($form['query']) ? $form['query'] : e_QUERY ;
 			$url = (isset($form['url']) ? e107::getParser()->replaceConstants($form['url'], 'abs') : e_SELF).($query ? '?'.$query : '');
-			$curTab = varset($_GET['tab'],0);
+			$curTab = strval(varset($_GET['tab'],'0'));
 
 			$text .= "
 				<form method='post' action='".$url."' id='{$form['id']}-form' enctype='multipart/form-data' autocomplete='off' >
@@ -5492,14 +5493,14 @@ class e_form
 					$text .= '<ul class="nav nav-tabs">';
 					foreach($data['tabs'] as $i=>$label)
 					{	
-						$class = ($i === $curTab) ? 'class="active" ' : '';
+						$class = (strval($i) === $curTab) ? 'class="active" ' : '';
 						$text .= '<li '.$class.'><a href="#tab'.$i.'" data-toggle="tab">'.$label.'</a></li>';
 					}
 					$text .= ' </ul><div class="tab-content">';	
 					
 					foreach($data['tabs'] as $tabId=>$label)
 					{
-						$active = ($tabId === $curTab) ? 'active' : '';
+						$active = (strval($tabId) === $curTab) ? 'active' : '';
 						$text .= '<div class="tab-pane '.$active.'" id="tab'.$tabId.'">';
 						$text .= $this->renderCreateFieldset($elid, $data, $model, $tabId);	
 						$text .= "</div>";