diff --git a/x-pack/plugins/enterprise_search/server/lib/enterprise_search_request_handler.test.ts b/x-pack/plugins/enterprise_search/server/lib/enterprise_search_request_handler.test.ts
index 3d0a3181f8ab8..d8cb24b34496b 100644
--- a/x-pack/plugins/enterprise_search/server/lib/enterprise_search_request_handler.test.ts
+++ b/x-pack/plugins/enterprise_search/server/lib/enterprise_search_request_handler.test.ts
@@ -93,6 +93,17 @@ describe('EnterpriseSearchRequestHandler', () => {
         });
       });
 
+      it('passes request params', async () => {
+        const requestHandler = enterpriseSearchRequestHandler.createRequest({
+          path: '/api/example',
+        });
+        await makeAPICall(requestHandler, { query: { someQuery: false } });
+
+        EnterpriseSearchAPI.shouldHaveBeenCalledWith(
+          'http://localhost:3002/api/example?someQuery=false'
+        );
+      });
+
       it('passes custom params set by the handler, which override request params', async () => {
         const requestHandler = enterpriseSearchRequestHandler.createRequest({
           path: '/api/example',
@@ -104,6 +115,17 @@ describe('EnterpriseSearchRequestHandler', () => {
           'http://localhost:3002/api/example?someQuery=true'
         );
       });
+
+      it('correctly encodes paths and query string parameters', async () => {
+        const requestHandler = enterpriseSearchRequestHandler.createRequest({
+          path: '/api/some example',
+        });
+        await makeAPICall(requestHandler, { query: { 'page[current]': 1 } });
+
+        EnterpriseSearchAPI.shouldHaveBeenCalledWith(
+          'http://localhost:3002/api/some%20example?page%5Bcurrent%5D=1'
+        );
+      });
     });
 
     describe('response passing', () => {
diff --git a/x-pack/plugins/enterprise_search/server/lib/enterprise_search_request_handler.ts b/x-pack/plugins/enterprise_search/server/lib/enterprise_search_request_handler.ts
index 6b65c16c832fd..cb28cd2b90f4d 100644
--- a/x-pack/plugins/enterprise_search/server/lib/enterprise_search_request_handler.ts
+++ b/x-pack/plugins/enterprise_search/server/lib/enterprise_search_request_handler.ts
@@ -69,7 +69,7 @@ export class EnterpriseSearchRequestHandler {
         const queryString = !this.isEmptyObj(queryParams)
           ? `?${querystring.stringify(queryParams)}`
           : '';
-        const url = encodeURI(this.enterpriseSearchUrl + path + queryString);
+        const url = encodeURI(this.enterpriseSearchUrl + path) + queryString;
 
         // Set up API options
         const { method } = request.route;