diff --git a/src/applications/differential/parser/DifferentialChangesetParser.php b/src/applications/differential/parser/DifferentialChangesetParser.php
--- a/src/applications/differential/parser/DifferentialChangesetParser.php
+++ b/src/applications/differential/parser/DifferentialChangesetParser.php
@@ -1901,9 +1901,13 @@
     $text = array();
 
     foreach ($lines as $line) {
+      if ($line === null) {
+        continue;
+      }
+
       // If this is a "No newline at end of file." annotation, don't hand it
       // off to the DocumentEngine.
-      if ($line['type'] == '\\') {
+      if ($line['type'] === '\\') {
         continue;
       }