diff --git a/Libraries/LibWeb/Streams/AbstractOperations.cpp b/Libraries/LibWeb/Streams/AbstractOperations.cpp
index d55111d261f..3ebc1837478 100644
--- a/Libraries/LibWeb/Streams/AbstractOperations.cpp
+++ b/Libraries/LibWeb/Streams/AbstractOperations.cpp
@@ -709,7 +709,7 @@ public:
     {
         // 1. Queue a microtask to perform the following steps:
         HTML::queue_a_microtask(nullptr, GC::create_function(m_realm->heap(), [this, chunk]() mutable {
-            HTML::TemporaryExecutionContext execution_context { m_realm };
+            HTML::TemporaryExecutionContext execution_context { m_realm, HTML::TemporaryExecutionContext::CallbacksEnabled::Yes };
 
             auto controller1 = m_params->branch1->controller()->get<GC::Ref<ReadableByteStreamController>>();
             auto controller2 = m_params->branch2->controller()->get<GC::Ref<ReadableByteStreamController>>();