diff --git a/public/app/plugins/datasource/postgres/postgres_query.ts b/public/app/plugins/datasource/postgres/postgres_query.ts
index 9a36a838c82..9e32736b405 100644
--- a/public/app/plugins/datasource/postgres/postgres_query.ts
+++ b/public/app/plugins/datasource/postgres/postgres_query.ts
@@ -245,7 +245,7 @@ export default class PostgresQuery {
       }
       switch (special.params[0]) {
         case 'increase':
-          query = query + ' - lag(' + query + ') OVER ()';
+          query = query + ' - lag(' + query + ') OVER (' + over + ')';
           break;
         case 'rate':
           let timeColumn = target.timeColumn;