diff --git a/phpstan.neon.dist b/phpstan.neon.dist
index 7f229a6..105e41f 100644
--- a/phpstan.neon.dist
+++ b/phpstan.neon.dist
@@ -5,5 +5,3 @@ parameters:
     paths:
         - src
         - tests
-    typeAliases:
-        BasicTypes: 'int|string|bool|null|float|array|iterable|callable|resource|object'
diff --git a/src/Result.php b/src/Result.php
index c4cce19..75a287e 100644
--- a/src/Result.php
+++ b/src/Result.php
@@ -114,8 +114,8 @@ public function and(self $right): self;
      * @see https://doc.rust-lang.org/std/result/enum.Result.html#method.and_then
      * @template U
      * @template F
-     * @param  Closure(T): Result<U, F>                          $right
-     * @return (F is BasicTypes ? Result<U, E|F> : Result<U, E>)
+     * @param  Closure(T): Result<U, F>                                                                                  $right
+     * @return (F is int|string|bool|null|float|array|iterable|callable|resource|object ? Result<U, E|F> : Result<U, E>)
      */
     public function andThen(Closure $right): self; /** @phpstan-ignore method.childParameterType */