diff --git a/datafusion/sql/src/unparser/dialect.rs b/datafusion/sql/src/unparser/dialect.rs
index 31d2662cc4cc0..869c6314470cf 100644
--- a/datafusion/sql/src/unparser/dialect.rs
+++ b/datafusion/sql/src/unparser/dialect.rs
@@ -340,6 +340,10 @@ impl Dialect for PostgreSqlDialect {
func_name: &str,
args: &[Expr],
) -> Result