diff --git a/src/Illuminate/Support/Stringable.php b/src/Illuminate/Support/Stringable.php
index 018416d9ac73..62a664114551 100644
--- a/src/Illuminate/Support/Stringable.php
+++ b/src/Illuminate/Support/Stringable.php
@@ -205,7 +205,7 @@ public function containsAll($needles, $ignoreCase = false)
      *
      * @param  int  $mode
      * @param  string  $encoding
-     * @return string
+     * @return static
      */
     public function convertCase(int $mode = MB_CASE_FOLD, ?string $encoding = 'UTF-8')
     {