diff --git a/call/BUILD.gn b/call/BUILD.gn
index b4680de860..85192746c1 100644
--- a/call/BUILD.gn
+++ b/call/BUILD.gn
@@ -328,6 +328,7 @@ rtc_library("call") {
     "../rtc_base:rtc_task_queue",
     "../rtc_base:safe_minmax",
     "../rtc_base:stringutils",
+    "../rtc_base:threading",
     "../rtc_base:timeutils",
     "../rtc_base/experiments:field_trial_parser",
     "../rtc_base/network:sent_packet",
diff --git a/call/degraded_call.cc b/call/degraded_call.cc
index fc76c7be5c..3f47fcded0 100644
--- a/call/degraded_call.cc
+++ b/call/degraded_call.cc
@@ -16,7 +16,7 @@
 #include "absl/strings/string_view.h"
 #include "api/sequence_checker.h"
 #include "modules/rtp_rtcp/source/rtp_util.h"
-#include "rtc_base/event.h"
+#include "rtc_base/thread.h"
 
 namespace webrtc {
 
@@ -172,13 +172,10 @@ DegradedCall::~DegradedCall() {
   // Otherwise, when the `DegradedCall` object is destroyed but
   // `SetNotAlive` has not yet been called,
   // another Closure guarded by `call_alive_` may be called.
-  rtc::Event event;
-  call_->network_thread()->PostTask(
-      [flag = std::move(call_alive_), &event]() mutable {
-        flag->SetNotAlive();
-        event.Set();
-      });
-  event.Wait(rtc::Event::kForever);
+  // TODO(https://crbug.com/webrtc/12649): Remove this block-invoke.
+  static_cast<rtc::Thread*>(call_->network_thread())
+      ->BlockingCall(
+          [flag = std::move(call_alive_)]() mutable { flag->SetNotAlive(); });
 }
 
 AudioSendStream* DegradedCall::CreateAudioSendStream(