move comment
diff --git a/src/base64Utils.js b/src/base64Utils.js
index 6e4e446..d0517ae 100644
--- a/src/base64Utils.js
+++ b/src/base64Utils.js
@@ -13,7 +13,8 @@
#else
// IE 10+ have atob, and so do practically all other browsers. Older node (at
// least 14) does not, though, nor does d8, and support in workers requires
-// somewhat newer versions of browsers, so gate this on env=web.
+// somewhat newer versions of browsers. So if we don't support IE and we are on
+// the web, we don't need a polyfill here, but otherwise we do.
// See https://developer.mozilla.org/en-US/docs/Web/API/atob
var decodeBase64 = typeof atob === 'function' ? atob : function (input) {
var keyStr = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
