diff --git a/Classes/PHPExcel/Style/NumberFormat.php b/Classes/PHPExcel/Style/NumberFormat.php
index 3d5b20e1..80347bf9 100644
--- a/Classes/PHPExcel/Style/NumberFormat.php
+++ b/Classes/PHPExcel/Style/NumberFormat.php
@@ -673,7 +673,10 @@ class PHPExcel_Style_NumberFormat extends PHPExcel_Style_Supervisor implements P
 									);
 							$value = preg_replace($number_regex, $value, $format);
 						} else {
-							if (preg_match('/0([^\d\.]+)0/', $format, $matches)) {
+							if (preg_match('/0E[+-]0/i', $format)) {
+								//	Scientific format
+								$value = sprintf('%5.2E', $value);
+							} elseif (preg_match('/0([^\d\.]+)0/', $format)) {
 								$value = self::_complexNumberFormatMask($value, $format);
 							} else {
 								$sprintf_pattern = "%0$minWidth." . strlen($right) . "f";
diff --git a/unitTests/rawTestData/Calculation/TextData/TEXT.data b/unitTests/rawTestData/Calculation/TextData/TEXT.data
index 3087dfaa..da18defa 100644
--- a/unitTests/rawTestData/Calculation/TextData/TEXT.data
+++ b/unitTests/rawTestData/Calculation/TextData/TEXT.data
@@ -1,10 +1,13 @@
-123.456,	'"$#,##0.00"',	"$123.46"
-123.456,	'"#,##0.00"',	"123.46"
-123.456,	'"#,##0"',	"123"
-123.456,	"00000",	"00123"
-123456.789,	'"$#,##0.00"',	'"$123,456.79"'
-123456.789,	'"#,##0.00"',	'"123,456.79"'
-123456.789,	"0.00E+00",	"1.23E05"
+123.456,		'"$#,##0.00"',	"$123.46"
+-123.456,		'"$#,##0.00"',	"$-123.46"
+123.456,		'"#,##0.00"',	"123.46"
+123.456,		'"#,##0"',		"123"
+123.456,		"00000",		"00123"
+123456.789,		'"$#,##0.00"',	'"$123,456.79"'
+123456.789,		'"#,##0.00"',	'"123,456.79"'
+123456.789,		"0.00E+00",		"1.23E05"
+-123456.789,	"0.00E+00",		"-1.23E05"
+0.000012345,	"0.00E+00",		"1.23E-05"
 "19-Dec-1960",	"yyyy-mm-dd",	"1960-12-19"
 "1-Jan-2012",	"yyyy-mm-dd",	"2012-01-01"
-1.75,		"# ?/?",	"1 3/4"
+1.75,			"# ?/?",		"1 3/4"