diff --git a/lib/web/fetch/request.js b/lib/web/fetch/request.js
index f8759626a1e..60f750e8fca 100644
--- a/lib/web/fetch/request.js
+++ b/lib/web/fetch/request.js
@@ -369,16 +369,6 @@ class Request {
 
     // 29. If signal is not null, then make this’s signal follow signal.
     if (signal != null) {
-      if (
-        !signal ||
-        typeof signal.aborted !== 'boolean' ||
-        typeof signal.addEventListener !== 'function'
-      ) {
-        throw new TypeError(
-          "Failed to construct 'Request': member signal is not of type AbortSignal."
-        )
-      }
-
       if (signal.aborted) {
         ac.abort(signal.reason)
       } else {