diff --git a/tests/PHPStanTests/nsrt/preg-match.php b/tests/PHPStanTests/nsrt/preg-match.php
index c71875f..38957c7 100644
--- a/tests/PHPStanTests/nsrt/preg-match.php
+++ b/tests/PHPStanTests/nsrt/preg-match.php
@@ -110,6 +110,10 @@ function doMatchAllStrictGroups(string $s): void
         assertType('array{}', $matches);
     }
     assertType('array{}|array{0: list<string>, test: list<non-empty-string>, 1: list<non-empty-string>}', $matches);
+
+    if (Preg::isMatchAllStrictGroups('/Price: (?<test>£|€)?\d+/', $s, $matches)) {
+        assertType('array{0: list<string>, test: list<non-empty-string>, 1: list<non-empty-string>}', $matches);
+    }
 }
 
 // disabled until https://github.com/phpstan/phpstan-src/pull/3185 can be resolved