diff --git a/back/methods/postcode/filter.js b/back/methods/postcode/filter.js
index 9986a16c9..4c3fc0cd3 100644
--- a/back/methods/postcode/filter.js
+++ b/back/methods/postcode/filter.js
@@ -1,16 +1,11 @@
 const {ParameterizedSQL} = require('loopback-connector');
-const {buildFilter, mergeFilters} = require('vn-loopback/util/filter');
-// const {models} = require('vn-loopback/server/server');
+const {buildFilter} = require('vn-loopback/util/filter');
 
 module.exports = Self => {
     Self.remoteMethod('filter', {
         description:
         'Find all postcodes of the model matched by postcode, town, province or country.',
         accessType: 'READ',
-        returns: {
-            type: ['object'],
-            root: true,
-        },
         accepts: [
             {
                 arg: 'filter',
@@ -25,6 +20,10 @@ module.exports = Self => {
                 http: {source: 'query'}
             },
         ],
+        returns: {
+            type: ['object'],
+            root: true,
+        },
         http: {
             path: `/filter`,
             verb: 'GET',
@@ -32,30 +31,34 @@ module.exports = Self => {
     });
     Self.filter = async(ctx, filter, options) => {
         const myOptions = {};
-
         if (typeof options == 'object')
             Object.assign(myOptions, options);
 
+        filter = ctx?.filter ?? {};
+
         const conn = Self.dataSource.connector;
-        const where = buildFilter(ctx.args, (param, value) => {
+        const where = buildFilter(filter?.where, (param, value) => {
             switch (param) {
             case 'search':
-                return {or: [
-                    {'pc.code': {like: `%${value}%`}},
-                    {'t.name': {like: `%${value}%`}},
-                    {'p.name': {like: `%${value}%`}},
-                    {'c.country': {like: `%${value}%`}}
-                ]
+                return {
+                    or: [
+                        {'pc.code': {like: `%${value}%`}},
+                        {'t.name': {like: `%${value}%`}},
+                        {'p.name': {like: `%${value}%`}},
+                        {'c.country': {like: `%${value}%`}}
+                    ]
                 };
             }
         }) ?? {};
-
-        filter = mergeFilters(ctx.args?.filter ?? {}, {where});
+        delete ctx.filter.where;
 
         const stmts = [];
         let stmt;
         stmt = new ParameterizedSQL(`
         SELECT
+            pc.townFk,
+            t.provinceFk,
+            p.countryFk,
             pc.code,
             t.name as town,
             p.name as province,
@@ -67,7 +70,7 @@ module.exports = Self => {
             JOIN country c on c.id = p.countryFk
         `);
 
-        stmt.merge(conn.makeSuffix(filter));
+        stmt.merge(conn.makeSuffix({where, ...ctx}));
         const itemsIndex = stmts.push(stmt) - 1;
 
         const sql = ParameterizedSQL.join(stmts, ';');
diff --git a/back/methods/postcode/specs/filter.spec.js b/back/methods/postcode/specs/filter.spec.js
index c393b629a..60ac24809 100644
--- a/back/methods/postcode/specs/filter.spec.js
+++ b/back/methods/postcode/specs/filter.spec.js
@@ -7,13 +7,13 @@ describe('Postcode filter()', () => {
 
         try {
             const ctx = {
-                args: {
-
+                filter: {
                 },
+                limit: 1
             };
             const results = await models.Postcode.filter(ctx, options);
 
-            expect(results.length).toBeGreaterThan(0);
+            expect(results.length).toEqual(1);
             await tx.rollback();
         } catch (e) {
             await tx.rollback();
@@ -27,8 +27,10 @@ describe('Postcode filter()', () => {
 
         try {
             const ctx = {
-                args: {
-                    search: 46,
+                filter: {
+                    where: {
+                        search: 46,
+                    }
                 },
             };
             const results = await models.Postcode.filter(ctx, options);
@@ -47,8 +49,10 @@ describe('Postcode filter()', () => {
 
         try {
             const ctx = {
-                args: {
-                    search: 'Alz',
+                filter: {
+                    where: {
+                        search: 'Alz',
+                    }
                 },
             };
             const results = await models.Postcode.filter(ctx, options);
@@ -67,8 +71,10 @@ describe('Postcode filter()', () => {
 
         try {
             const ctx = {
-                args: {
-                    search: 'one',
+                filter: {
+                    where: {
+                        search: 'one',
+                    }
                 },
             };
             const results = await models.Postcode.filter(ctx, options);
@@ -87,8 +93,10 @@ describe('Postcode filter()', () => {
 
         try {
             const ctx = {
-                args: {
-                    search: 'Ec',
+                filter: {
+                    where: {
+                        search: 'Ec',
+                    }
                 },
             };
             const results = await models.Postcode.filter(ctx, options);