diff --git a/sqlx-postgres/src/connection/describe.rs b/sqlx-postgres/src/connection/describe.rs
index 9d532a517..145616fec 100644
--- a/sqlx-postgres/src/connection/describe.rs
+++ b/sqlx-postgres/src/connection/describe.rs
@@ -451,7 +451,7 @@ WHERE rngtypid = $1
                 .push_unseparated("::int4");
             tuple
                 .push_bind(column.relation_attribute_no)
-                .push_bind_unseparated("::int2");
+                .push_unseparated("::int2");
         });
 
         nullable_query.push(