diff --git a/ext/web/08_text_encoding.js b/ext/web/08_text_encoding.js
index d2922a6d45..6929097262 100644
--- a/ext/web/08_text_encoding.js
+++ b/ext/web/08_text_encoding.js
@@ -292,6 +292,9 @@
         transform: (chunk, controller) => {
           try {
             chunk = webidl.converters.DOMString(chunk);
+            if (chunk === "") {
+              return PromiseResolve();
+            }
             if (this.#pendingHighSurrogate !== null) {
               chunk = this.#pendingHighSurrogate + chunk;
             }