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 e1332d4201..4d61cac91f 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
@@ -171,7 +171,7 @@ def test_space(self, dbe: DbEvaluator) -> None:
         assert (
             to_str(dbe.eval("SPACE(4)")) == "    "
         )  # SPACE(<int literal>) is evaluated in Python rather than in the DB,
-        assert to_str(dbe.eval("SPACE(2 + 2)")) == "    "  # while this version actually uses the DB function(s)
+        assert to_str(dbe.eval("SPACE(LEN('aaaa'))")) == "    "  # while this version actually uses the DB function(s)
 
     def test_split_3(self, dbe: DbEvaluator, data_table: sa.Table) -> None:
         if not self.supports_split_3: