diff --git a/src/Psalm/Type/Atomic/TSingleLetter.php b/src/Psalm/Type/Atomic/TSingleLetter.php
index c12ad3d21..604e1ecbb 100644
--- a/src/Psalm/Type/Atomic/TSingleLetter.php
+++ b/src/Psalm/Type/Atomic/TSingleLetter.php
@@ -7,6 +7,6 @@ namespace Psalm\Type\Atomic;
  *
  * @psalm-immutable
  */
-final class TSingleLetter extends TString
+final class TSingleLetter extends TNonEmptyString
 {
 }
diff --git a/tests/ArrayAccessTest.php b/tests/ArrayAccessTest.php
index 1a9a63f1b..01da42eb9 100644
--- a/tests/ArrayAccessTest.php
+++ b/tests/ArrayAccessTest.php
@@ -524,6 +524,15 @@ class ArrayAccessTest extends TestCase
                         }
                     }',
             ],
+            'nonEmptyStringAccess' => [
+                'code' => '<?php
+                    /** @var non-empty-string $a */
+                    $a = "blah";
+                    $b = $a[0];',
+                'assertions' => [
+                    '$b===' => 'non-empty-string',
+                ],
+            ],
             'notEmptyStringOffset' => [
                 'code' => '<?php
                     /**