diff --git a/Classes/PHPExcel/Cell/AdvancedValueBinder.php b/Classes/PHPExcel/Cell/AdvancedValueBinder.php
index d6c04330..bb3c8822 100644
--- a/Classes/PHPExcel/Cell/AdvancedValueBinder.php
+++ b/Classes/PHPExcel/Cell/AdvancedValueBinder.php
@@ -80,7 +80,7 @@ class PHPExcel_Cell_AdvancedValueBinder extends PHPExcel_Cell_DefaultValueBinder
             }
 
             // Check for fraction
-            if (preg_match('/^([+-]?) *([0-9]*)\s?\/\s*([0-9]*)$/', $value, $matches)) {
+            if (preg_match('/^([+-]?)\s*([0-9]+)\s?\/\s*([0-9]+)$/', $value, $matches)) {
                 // Convert value to number
                 $value = $matches[2] / $matches[3];
                 if ($matches[1] == '-') $value = 0 - $value;
diff --git a/changelog.txt b/changelog.txt
index 658fd1c8..96f97c6d 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -45,6 +45,7 @@ Fixed in develop branch for release v1.8.0:
 - Bugfix:   (Jazzo)           Work Item GH-248  - Excel2007 does not correctly mark rows as hidden
 - Bugfix:   (Roy Shahbazian)  Work Item GH-299  - Fixed typo in Chart/Layout set/getYMode()
 - Bugfix:   (EliuFlorez)      Work item GH-279  - Fatal error: Call to a member function cellExists() line: 3327 in calculation.php if referenced worksheet doesn't exist
+- Bugfix:   (MBaker)          Work Item GH-290  - AdvancedValueBinder "Division by zero"-error
 - Feature:  (amerov)                            - Implementation of the Excel HLOOKUP() function
 - Feature:  (MBaker)                            - Added "Quote Prefix" to style settings (Excel2007 Reader and Writer only)
 - Feature:  (MBaker)                            - Added Horizontal FILL alignment for Excel5 and Excel2007 Readers/Writers, and Horizontal DISTRIBUTED alignment for Excel2007 Reader/Writer