diff --git a/src/GitElephant/Objects/Diff/DiffChunkLineAdded.php b/src/GitElephant/Objects/Diff/DiffChunkLineAdded.php
index <HASH>..<HASH> 100644
--- a/src/GitElephant/Objects/Diff/DiffChunkLineAdded.php
+++ b/src/GitElephant/Objects/Diff/DiffChunkLineAdded.php
@@ -36,4 +36,14 @@ class DiffChunkLineAdded extends DiffChunkLineChanged
         $this->setContent($content);
         $this->setType(self::ADDED);
     }
+
+    /**
+     * Get destination line number
+     *
+     * @return int
+     */
+    public function getOriginNumber()
+    {
+        return '';
+    }
 }
getOriginNumber of an added line is always empty