diff --git a/etemplate/inc/class.boetemplate.inc.php b/etemplate/inc/class.boetemplate.inc.php
index a2a0e13c52..01deb420c1 100644
--- a/etemplate/inc/class.boetemplate.inc.php
+++ b/etemplate/inc/class.boetemplate.inc.php
@@ -478,6 +478,17 @@ class boetemplate extends soetemplate
 		return (self::$extensions[$type] || $this->loadExtension($type,$ui)) &&
 						($function == '' || self::$extensions[$type]->public_functions[$function]);
 	}
+	
+	/**
+	 * Check if we have a widget of type $type
+	 * 
+	 * @param string $type
+	 * @return boolean true widget exists, false unknow widget type
+	 */
+	public function widgetExists($type)
+	{
+		return isset(self::$types[$tpye]) || $this->haveExtension($type);
+	}
 
 	/**
 	 * executes the pre_process-function of the extension $cell[type]
diff --git a/etemplate/inc/class.historylog_widget.inc.php b/etemplate/inc/class.historylog_widget.inc.php
index aa27a1b604..0a63d3571f 100644
--- a/etemplate/inc/class.historylog_widget.inc.php
+++ b/etemplate/inc/class.historylog_widget.inc.php
@@ -77,7 +77,8 @@ class historylog_widget
 			$cell = etemplate::empty_cell($type,$cell['name'],array('readonly' => true,'size' => $options));
 			if (is_array($type))
 			{
-				if (isset($type[0]))	// numeric indexed array --> multiple values of 1:N releation
+				if (isset($type[0]) &&	// numeric indexed array --> multiple values of 1:N releation
+					$tmpl->widgetExists($type[0]))
 				{
 					$cell['type'] = 'vbox';
 					$cell['size'] = '0,,0,0';