diff --git a/Classes/PHPExcel/Reader/Excel5.php b/Classes/PHPExcel/Reader/Excel5.php
index 4552f621..a6acee22 100644
--- a/Classes/PHPExcel/Reader/Excel5.php
+++ b/Classes/PHPExcel/Reader/Excel5.php
@@ -1233,8 +1233,6 @@ class PHPExcel_Reader_Excel5 implements PHPExcel_Reader_IReader
 			return;
 		}
 
-//		hexDump($this->_documentSummaryInformation);
-//
 		//	offset: 0;	size: 2;	must be 0xFE 0xFF (UTF-16 LE byte order mark)
 		//	offset: 2;	size: 2;
 		//	offset: 4;	size: 2;	OS version
diff --git a/Classes/PHPExcel/Writer/Excel5/Worksheet.php b/Classes/PHPExcel/Writer/Excel5/Worksheet.php
index a812a642..a4a25c2b 100644
--- a/Classes/PHPExcel/Writer/Excel5/Worksheet.php
+++ b/Classes/PHPExcel/Writer/Excel5/Worksheet.php
@@ -1239,8 +1239,6 @@ class PHPExcel_Writer_Excel5_Worksheet extends PHPExcel_Writer_Excel5_BIFFwriter
 				);
 		}
 
-		hexdump($data);
-
 		$header = pack("vv", $record, $length);
 		$this->_append($header.$data);
 	}