diff --git a/Classes/PHPExcel/Shared/Date.php b/Classes/PHPExcel/Shared/Date.php
index 4bae5f2..0c7bb91 100644
--- a/Classes/PHPExcel/Shared/Date.php
+++ b/Classes/PHPExcel/Shared/Date.php
@@ -283,7 +283,7 @@ class PHPExcel_Shared_Date
 		if (strtolower($pFormatCode) === strtolower(PHPExcel_Style_NumberFormat::FORMAT_GENERAL))
             //	"General" contains an epoch letter 'e', so we trap for it explicitly here (case-insensitive check)
 			return FALSE;
-        if (preg_match('/0E[+-]0/i', $pFormatCode)) {
+        if (preg_match('/[0#]E[+-]0/i', $pFormatCode))
 			//	Scientific format
 			return FALSE;
 		// Switch on formatcode
diff --git a/Classes/PHPExcel/Style/NumberFormat.php b/Classes/PHPExcel/Style/NumberFormat.php
index 80347bf..a0688f4 100644
--- a/Classes/PHPExcel/Style/NumberFormat.php
+++ b/Classes/PHPExcel/Style/NumberFormat.php
@@ -673,7 +673,7 @@ class PHPExcel_Style_NumberFormat extends PHPExcel_Style_Supervisor implements P
 									);
 							$value = preg_replace($number_regex, $value, $format);
 						} else {
-							if (preg_match('/0E[+-]0/i', $format)) {
+							if (preg_match('/[0#]E[+-]0/i', $format)) {
 								//	Scientific format
 								$value = sprintf('%5.2E', $value);
 							} elseif (preg_match('/0([^\d\.]+)0/', $format)) {