diff --git a/lib/js-api/src/superagentHttpClient.ts b/lib/js-api/src/superagentHttpClient.ts
index e201067deb..a47130d2aa 100644
--- a/lib/js-api/src/superagentHttpClient.ts
+++ b/lib/js-api/src/superagentHttpClient.ts
@@ -176,12 +176,12 @@ export class SuperagentHttpClient implements HttpClient {
 
         if (contentType && contentType !== 'multipart/form-data') {
             request.type(contentType);
-        } else if (!(request as any).header['Content-Type'] && contentType !== 'multipart/form-data') {
+        } else if (!request.header['Content-Type'] && contentType !== 'multipart/form-data') {
             request.type('application/json');
         }
 
         if (contentType === 'application/x-www-form-urlencoded') {
-            request.send(SuperagentHttpClient.normalizeParams(formParams)).on('progress', (event: any) => {
+            request.send(SuperagentHttpClient.normalizeParams(formParams)).on('progress', (event) => {
                 this.progress(event, eventEmitter);
             });
         } else if (contentType === 'multipart/form-data') {