diff --git a/modules/client/back/methods/client/filter.js b/modules/client/back/methods/client/filter.js
index 3bf29501b..eaf4ecf30 100644
--- a/modules/client/back/methods/client/filter.js
+++ b/modules/client/back/methods/client/filter.js
@@ -80,10 +80,15 @@ module.exports = Self => {
             Object.assign(myOptions, options);
 
         if (args.zoneFk) {
-            query = `CALL vn.zone_getPostalCode(?)`;
-            const [geos] = await Self.rawSql(query, [args.zoneFk]);
-            for (let geo of geos)
-                postalCode.push(geo.name);
+            let stmts = [];
+            stmts.push(new ParameterizedSQL('CALL vn.zone_getPostalCode(?)', [args.zoneFk]));
+            stmts.push(`SELECT name FROM tmp.zoneNodes`);
+            stmts.push(`DROP TEMPORARY TABLE tmp.zoneNodes`);
+            const sql = ParameterizedSQL.join(stmts, ';');
+            const [results] = await conn.executeStmt(sql);
+
+            for (let result of results)
+                postalCode.push(result.name);
         }
 
         const where = buildFilter(ctx.args, (param, value) => {