diff --git a/src/Illuminate/Contracts/Pagination/Paginator.php b/src/Illuminate/Contracts/Pagination/Paginator.php
index 09292f4a3143..04201cef4e9a 100644
--- a/src/Illuminate/Contracts/Pagination/Paginator.php
+++ b/src/Illuminate/Contracts/Pagination/Paginator.php
@@ -53,14 +53,14 @@ public function items();
     /**
      * Get the "index" of the first item being paginated.
      *
-     * @return int
+     * @return int|null
      */
     public function firstItem();
 
     /**
      * Get the "index" of the last item being paginated.
      *
-     * @return int
+     * @return int|null
      */
     public function lastItem();
 
diff --git a/src/Illuminate/Pagination/AbstractPaginator.php b/src/Illuminate/Pagination/AbstractPaginator.php
index a4979840f3b3..ed04d5f97234 100644
--- a/src/Illuminate/Pagination/AbstractPaginator.php
+++ b/src/Illuminate/Pagination/AbstractPaginator.php
@@ -319,7 +319,7 @@ public function items()
     /**
      * Get the number of the first item in the slice.
      *
-     * @return int
+     * @return int|null
      */
     public function firstItem()
     {
@@ -329,7 +329,7 @@ public function firstItem()
     /**
      * Get the number of the last item in the slice.
      *
-     * @return int
+     * @return int|null
      */
     public function lastItem()
     {