diff --git a/Classes/PHPExcel/Worksheet/Column.php b/Classes/PHPExcel/Worksheet/Column.php
index 8c561fa..6d3f36d 100644
--- a/Classes/PHPExcel/Worksheet/Column.php
+++ b/Classes/PHPExcel/Worksheet/Column.php
@@ -65,7 +65,7 @@ class PHPExcel_Worksheet_Column
     /**
      * Get column index
      *
-     * @return int
+     * @return string
      */
     public function getColumnIndex()
     {