diff --git a/src/Issue/IssueSearchResult.php b/src/Issue/IssueSearchResult.php
index 9b9fafa..a714a1a 100644
--- a/src/Issue/IssueSearchResult.php
+++ b/src/Issue/IssueSearchResult.php
@@ -39,7 +39,7 @@ class IssueSearchResult
     public $issues;
 
     /**
-     * @return int
+     * @return string|null
      */
     public function getNextPageToken()
     {