diff --git a/src/CoreBundle/EventListener/DcGeneral/DefinitionBuilder/PanelBuilder.php b/src/CoreBundle/EventListener/DcGeneral/DefinitionBuilder/PanelBuilder.php
index a6a171d86..55016b5e5 100644
--- a/src/CoreBundle/EventListener/DcGeneral/DefinitionBuilder/PanelBuilder.php
+++ b/src/CoreBundle/EventListener/DcGeneral/DefinitionBuilder/PanelBuilder.php
@@ -104,7 +104,7 @@ protected function build(IMetaModelDataDefinition $container)
         $panelRows = $panel->getRows();
         foreach ($arrRows as $rowNo => $rowElements) {
             // Get the row, if we have one or create a new one.
-            if ($panelRows->getRowCount() < ((int) $rowNo + 1)) {
+            if ($panelRows->getRowCount() < (\intval($rowNo) + 1)) {
                 $panelRow = $panelRows->addRow();
             } else {
                 $panelRow = $panelRows->getRow($rowNo);