diff --git a/README.md b/README.md
index bd32d00..e51d71a 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@ whatwg-url is a full implementation of the WHATWG [URL Standard](https://url.spe
 
 ## Specification conformance
 
-whatwg-url is currently up to date with the URL spec up to commit [eee49fd](https://github.com/whatwg/url/commit/eee49fdf4f99d59f717cbeb0bce29fda930196d4).
+whatwg-url is currently up to date with the URL spec up to commit [ffee2e2](https://github.com/whatwg/url/commit/ffee2e21c7034cc72d813d45dd85637e70bbeeec).
 
 For `file:` URLs, whose [origin is left unspecified](https://url.spec.whatwg.org/#concept-url-origin), whatwg-url chooses to use a new opaque origin (which serializes to `"null"`).
 
diff --git a/lib/url-state-machine.js b/lib/url-state-machine.js
index 9903392..8c51832 100644
--- a/lib/url-state-machine.js
+++ b/lib/url-state-machine.js
@@ -325,7 +325,7 @@ function serializeIPv6(address) {
   return output;
 }
 
-function parseHost(input, isNotSpecialArg = false) {
+function parseHost(input, isOpaque = false) {
   if (input[0] === "[") {
     if (input[input.length - 1] !== "]") {
       return failure;
@@ -334,7 +334,7 @@ function parseHost(input, isNotSpecialArg = false) {
     return parseIPv6(input.substring(1, input.length - 1));
   }
 
-  if (isNotSpecialArg) {
+  if (isOpaque) {
     return parseOpaqueHost(input);
   }