diff --git a/lib/utils/got.js b/lib/utils/got.js
index 99135fffd..525b75557 100644
--- a/lib/utils/got.js
+++ b/lib/utils/got.js
@@ -75,6 +75,9 @@ const custom = got.extend({
                 if (options.data) {
                     options.body = options.body || options.data;
                 }
+                if (options.responseType === 'buffer') {
+                    options.encoding = null;
+                }
                 if (options.params) {
                     options.query = options.query || queryString.stringify(options.params);
                     options.searchParams = options.query; // for Got v11 after