diff --git a/application/displayblock.class.inc.php b/application/displayblock.class.inc.php
index 076ef2c59..2b35153ac 100644
--- a/application/displayblock.class.inc.php
+++ b/application/displayblock.class.inc.php
@@ -702,11 +702,11 @@ EOF
 			$sChartType = isset($aExtraParams['chart_type']) ? $aExtraParams['chart_type'] : 'pie';
 			$sTitle = isset($aExtraParams['chart_title']) ? $aExtraParams['chart_title'] : '';
 			$sGroupBy = isset($aExtraParams['group_by']) ? $aExtraParams['group_by'] : '';
-			$sFilter = $this->m_oFilter->ToOQL();
+			$sFilter = $this->m_oFilter->serialize();
 			$sHtml .= "<div id=\"my_chart_{$iChartCounter}\">If the chart does not display, <a href=\"http://get.adobe.com/flash/\" target=\"_blank\">install Flash</a></div>\n";
 			$oPage->add_script("function ofc_resize(left, width, top, height) { /* do nothing special */ }");
 			$oPage->add_ready_script("swfobject.embedSWF(\"../images/open-flash-chart.swf\", \"my_chart_{$iChartCounter}\", \"100%\", \"300\",\"9.0.0\", \"expressInstall.swf\",
-			{\"data-file\":\"".urlencode("../pages/ajax.render.php?operation=open_flash_chart&params[group_by]=$sGroupBy&params[chart_type]=$sChartType&params[chart_title]=$sTitle&encoding=oql&filter=".urlencode($sFilter))."\"}, {wmode: 'transparent'} );\n");
+			{\"data-file\":\"".urlencode("../pages/ajax.render.php?operation=open_flash_chart&params[group_by]=$sGroupBy&params[chart_type]=$sChartType&params[chart_title]=$sTitle&filter=".$sFilter)."\"}, {wmode: 'transparent'} );\n");
 			$iChartCounter++;
 			break;
 			
diff --git a/pages/ajax.render.php b/pages/ajax.render.php
index f8b197108..f50a4c4f5 100644
--- a/pages/ajax.render.php
+++ b/pages/ajax.render.php
@@ -184,14 +184,7 @@ switch($operation)
 	$aParams = utils::ReadParam('params', array());
 	if ($sFilter != '')
 	{
-		if ($sEncoding == 'oql')
-		{
-			$oFilter = CMDBSearchFilter::FromOQL($sFilter);
-		}
-		else
-		{
-			$oFilter = CMDBSearchFilter::unserialize($sFilter);
-		}
+		$oFilter = CMDBSearchFilter::unserialize($sFilter);
 		$oDisplayBlock = new DisplayBlock($oFilter, 'open_flash_chart_ajax', false);
 		$oDisplayBlock->RenderContent($oPage, $aParams);
 	}