diff --git a/Classes/PHPExcel/Writer/Excel2007/Workbook.php b/Classes/PHPExcel/Writer/Excel2007/Workbook.php
index 3668779f..af3fa9c3 100644
--- a/Classes/PHPExcel/Writer/Excel2007/Workbook.php
+++ b/Classes/PHPExcel/Writer/Excel2007/Workbook.php
@@ -353,6 +353,11 @@ class PHPExcel_Writer_Excel2007_Workbook extends PHPExcel_Writer_Excel2007_Write
 			// Create absolute coordinate and write as raw text
 			$range = PHPExcel_Cell::splitRange($pSheet->getAutoFilter());
 			$range = $range[0];
+			//	Strip any worksheet ref so we can make the cell ref absolute
+			if (strpos($range[0],'!') !== false) {
+				list($ws,$range[0]) = explode('!',$range[0]);
+			}
+
 			$range[0] = PHPExcel_Cell::absoluteCoordinate($range[0]);
 			$range[1] = PHPExcel_Cell::absoluteCoordinate($range[1]);
 			$range = implode(':', $range);
diff --git a/changelog.txt b/changelog.txt
index a3314525..dc64c3dd 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -24,6 +24,7 @@
 
 
 Fixed in SVN:
+- Bugfix:   (MBaker) Work item 15459 - Invalid cell coordinate in Autofilter for Excel2007 Writer
 
 
 2011-02)27 (v1.7.6):