diff --git a/lib/discovery.js b/lib/discovery.js
index a10454d7..1d234fa5 100644
--- a/lib/discovery.js
+++ b/lib/discovery.js
@@ -20,7 +20,7 @@ function mixinDiscovery(PostgreSQL) {
         limit = limit + ' LIMIT ' + options.limit;
       }
     }
-    if (!orderBy) {
+    if (orderBy) {
       sql += ' ORDER BY ' + orderBy;
     }
     return sql + limit;