diff --git a/src/api/ProductSearchApi.js b/src/api/ProductSearchApi.js
index 906606e..ba7c0e5 100644
--- a/src/api/ProductSearchApi.js
+++ b/src/api/ProductSearchApi.js
@@ -67,7 +67,6 @@ export default class ProductSearchApi {
         const pathParams = {}
         const queryParams = {
             q: opts.q,
-            refine: this.apiClient.buildCollectionParam(opts.refine, 'csv'),
             sort: opts.sort,
             start: opts.start,
             count: opts.count,
@@ -75,6 +74,11 @@ export default class ProductSearchApi {
             currency: opts.currency,
             locale: opts.locale
         }
+        if (Array.isArray(opts.refine)) {
+            opts.refine.forEach((value, index) => {
+                queryParams[`refine_${index + 1}`] = this.apiClient.paramToString(value)
+            })
+        }
         const headerParams = {}
         const formParams = {}
 
@@ -155,12 +159,16 @@ export default class ProductSearchApi {
         const pathParams = {}
         const queryParams = {
             q: opts.q,
-            refine: this.apiClient.buildCollectionParam(opts.refine, 'csv'),
             sort: opts.sort,
             start: opts.start,
             count: opts.count,
             locale: opts.locale
         }
+        if (Array.isArray(opts.refine)) {
+            opts.refine.forEach((value, index) => {
+                queryParams[`refine_${index + 1}`] = this.apiClient.paramToString(value)
+            })
+        }
         const headerParams = {}
         const formParams = {}
 
@@ -236,12 +244,16 @@ export default class ProductSearchApi {
         const pathParams = {}
         const queryParams = {
             q: opts.q,
-            refine: this.apiClient.buildCollectionParam(opts.refine, 'csv'),
             sort: opts.sort,
             start: opts.start,
             count: opts.count,
             locale: opts.locale
         }
+        if (Array.isArray(opts.refine)) {
+            opts.refine.forEach((value, index) => {
+                queryParams[`refine_${index + 1}`] = this.apiClient.paramToString(value)
+            })
+        }
         const headerParams = {}
         const formParams = {}
 
@@ -318,13 +330,17 @@ export default class ProductSearchApi {
         const pathParams = {}
         const queryParams = {
             q: opts.q,
-            refine: this.apiClient.buildCollectionParam(opts.refine, 'csv'),
             sort: opts.sort,
             start: opts.start,
             count: opts.count,
             currency: opts.currency,
             locale: opts.locale
         }
+        if (Array.isArray(opts.refine)) {
+            opts.refine.forEach((value, index) => {
+                queryParams[`refine_${index + 1}`] = this.apiClient.paramToString(value)
+            })
+        }
         const headerParams = {}
         const formParams = {}
 
@@ -399,12 +415,16 @@ export default class ProductSearchApi {
         const pathParams = {}
         const queryParams = {
             q: opts.q,
-            refine: this.apiClient.buildCollectionParam(opts.refine, 'csv'),
             sort: opts.sort,
             start: opts.start,
             count: opts.count,
             locale: opts.locale
         }
+        if (Array.isArray(opts.refine)) {
+            opts.refine.forEach((value, index) => {
+                queryParams[`refine_${index + 1}`] = this.apiClient.paramToString(value)
+            })
+        }
         const headerParams = {}
         const formParams = {}