diff --git a/tests/NodaTimeSplitterTest.php b/tests/NodaTimeSplitterTest.php
index 05e8832..405d827 100644
--- a/tests/NodaTimeSplitterTest.php
+++ b/tests/NodaTimeSplitterTest.php
@@ -604,6 +604,7 @@ final class NodaTimeSplitterTest extends TestCase {
             "13.13.2022",
             "2022-13-13",
             "40.10.2022",
+            "1903/04",
             "2022-10-40",
             "6;November 1978",
             "65497028c51eb",