diff --git a/CHANGELOG.md b/CHANGELOG.md
index b7d6dc2e..03e3fe60 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -37,6 +37,9 @@ so installation via ZIP-archive download is not an option anymore. To install PH
 - `\PhpOffice\PhpWord\Shared\XMLReader` replaced by `\PhpOffice\Common\XMLReader`. - @Progi1984 #658
 - `\PhpOffice\PhpWord\Shared\XMLWriter` replaced by `\PhpOffice\Common\XMLWriter`. - @Progi1984 @RomanSyroeshko #658
 
+### Fixed
+- `Undefined property` error while reading MS-DOC documents. - @jaberu #503 #612
+
 
 
 0.12.1 (30 August 2015)
diff --git a/src/PhpWord/Reader/MsDoc.php b/src/PhpWord/Reader/MsDoc.php
index 3c7c7b95..00659aea 100644
--- a/src/PhpWord/Reader/MsDoc.php
+++ b/src/PhpWord/Reader/MsDoc.php
@@ -149,7 +149,7 @@ class MsDoc extends AbstractReader implements ReaderInterface
         // Get Summary Information data
         $this->_SummaryInformation = $ole->getStream($ole->summaryInformation);
         // Get Document Summary Information data
-        $this->_DocumentSummaryInformation = $ole->getStream($ole->documentSummaryInformation);
+        $this->_DocumentSummaryInformation = $ole->getStream($ole->docSummaryInfos);
     }
 
     private function getNumInLcb($lcb, $iSize)