diff --git a/src/Illuminate/Support/Str.php b/src/Illuminate/Support/Str.php
index 3eef5a6aa9a6..d74ebac1fec2 100644
--- a/src/Illuminate/Support/Str.php
+++ b/src/Illuminate/Support/Str.php
@@ -956,7 +956,7 @@ public static function replaceArray($search, $replace, $subject)
      * @param  string|iterable<string>  $replace
      * @param  string|iterable<string>  $subject
      * @param  bool  $caseSensitive
-     * @return string
+     * @return string|string[]
      */
     public static function replace($search, $replace, $subject, $caseSensitive = true)
     {