diff --git a/Classes/PHPExcel/Cell.php b/Classes/PHPExcel/Cell.php
index 93ebb72a..24915fde 100644
--- a/Classes/PHPExcel/Cell.php
+++ b/Classes/PHPExcel/Cell.php
@@ -317,7 +317,7 @@ class PHPExcel_Cell
 	public function setCalculatedValue($pValue = null)
 	{
 		if (!is_null($pValue)) {
-			$this->_calculatedValue = $pValue;
+			$this->_calculatedValue = (is_numeric($pValue)) ? (float) $pValue : $pValue;
 		}
 
 		return $this->notifyCacheController();