Index: core/units/helpers/col_picker_helper.php
===================================================================
--- core/units/helpers/col_picker_helper.php
+++ core/units/helpers/col_picker_helper.php
@@ -347,8 +347,8 @@
 	protected function fixColumnName($name)
 	{
 		if ( in_array($name, $this->formatterRenamed) ) {
-			// remove language prefix from field, because formatter renamed column
-			$column_name = preg_replace('/^l[\d]+_/', '', $name);
+			// Remove language prefix from field, because formatter renamed column.
+			$name = preg_replace('/^l[\d]+_/', '', $name);
 		}
 
 		return $name;