diff --git a/lib/dl_formula_testing/dl_formula_testing/testcases/functions_string.py b/lib/dl_formula_testing/dl_formula_testing/testcases/functions_string.py
index e1332d420..823db6061 100644
--- a/lib/dl_formula_testing/dl_formula_testing/testcases/functions_string.py
+++ b/lib/dl_formula_testing/dl_formula_testing/testcases/functions_string.py
@@ -178,6 +178,7 @@ def test_split_3(self, dbe: DbEvaluator, data_table: sa.Table) -> None:
             pytest.skip()
 
         assert to_str(dbe.eval('SPLIT("Lorem ipsum dolor sit amet", " ", 3)')) == "dolor"
+        assert to_str(dbe.eval('SPLIT("Lorem ipsum dolor sit amet", " ", -2)')) == "sit"
         assert to_str(dbe.eval('SPLIT([str_null_value], " ", 3)', from_=data_table)) in (None, "")
 
     def test_split_1_2(self, dbe: DbEvaluator, data_table: sa.Table) -> None: