diff --git a/lib/polyfill/abort_controller.js b/lib/polyfill/abort_controller.js
index 3ebf1acc6e..ddb5fe3c66 100644
--- a/lib/polyfill/abort_controller.js
+++ b/lib/polyfill/abort_controller.js
@@ -86,6 +86,13 @@ class extends shaka.util.FakeEventTarget {
     return this.reason_;
   }
 
+  /** @return {void} */
+  throwIfAborted() {
+    if (this.aborted_) {
+      throw this.reason_;
+    }
+  }
+
   /**
    * @param {*} reason
    * @private