diff --git a/internal/jet/literal_expression_test.go b/internal/jet/literal_expression_test.go
index 5142f27..182aa25 100644
--- a/internal/jet/literal_expression_test.go
+++ b/internal/jet/literal_expression_test.go
@@ -6,7 +6,7 @@ import (
 )
 
 func TestRawExpression(t *testing.T) {
-	assertClauseSerialize(t, Raw("current_database()"), "current_database()")
+	assertClauseSerialize(t, Raw("current_database()"), "(current_database())")
 
 	var timeT = time.Date(2009, 11, 17, 20, 34, 58, 651387237, time.UTC)
 
diff --git a/tests/testdata b/tests/testdata
index 0d52780..a6c1975 160000
--- a/tests/testdata
+++ b/tests/testdata
@@ -1 +1 @@
-Subproject commit 0d52780c6510d4b1e560081a82648b85c555ce43
+Subproject commit a6c1975a167645f913496131ae81d4cabc070046