diff --git a/CHANGELOG.md b/CHANGELOG.md
index ce553f05..8753ae7d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@ v0.16.0 (xx xxx 2018)
 ### Fixed
 - Fix regex in `cloneBlock` function @nicoder #1269
 - HTML Title Writer loses text when Title contains a TextRun instead a string. @begnini #1436
+- Fix loading of Sharepoint document @Garrcomm #1498
 - RTF writer: Round getPageSizeW and getPageSizeH to avoid decimals @Patrick64 #1493
 - Fix parsing of Office 365 documents @Timanx #1485
 
diff --git a/src/PhpWord/Reader/Word2007.php b/src/PhpWord/Reader/Word2007.php
index deed3ce3..52030ef8 100644
--- a/src/PhpWord/Reader/Word2007.php
+++ b/src/PhpWord/Reader/Word2007.php
@@ -62,6 +62,9 @@ class Word2007 extends AbstractReader implements ReaderInterface
         foreach ($steps as $step) {
             $stepPart = $step['stepPart'];
             $stepItems = $step['stepItems'];
+            if (!isset($relationships[$stepPart])) {
+                continue;
+            }
             foreach ($relationships[$stepPart] as $relItem) {
                 $relType = $relItem['type'];
                 if (isset($stepItems[$relType])) {