diff --git a/Source/WebCore/platform/mediastream/libwebrtc/gstreamer/RealtimeOutgoingAudioSourceLibWebRTC.h b/Source/WebCore/platform/mediastream/libwebrtc/gstreamer/RealtimeOutgoingAudioSourceLibWebRTC.h
index 13f0ea632a93..9639f6a33bc4 100644
--- a/Source/WebCore/platform/mediastream/libwebrtc/gstreamer/RealtimeOutgoingAudioSourceLibWebRTC.h
+++ b/Source/WebCore/platform/mediastream/libwebrtc/gstreamer/RealtimeOutgoingAudioSourceLibWebRTC.h
@@ -31,6 +31,8 @@
 namespace WebCore {
 
 class RealtimeOutgoingAudioSourceLibWebRTC final : public RealtimeOutgoingAudioSource, public CanMakeCheckedPtr<RealtimeOutgoingAudioSourceLibWebRTC> {
+    WTF_MAKE_FAST_ALLOCATED;
+    WTF_OVERRIDE_DELETE_FOR_CHECKED_PTR(RealtimeOutgoingAudioSourceLibWebRTC);
 public:
     static Ref<RealtimeOutgoingAudioSourceLibWebRTC> create(Ref<MediaStreamTrackPrivate>&& audioTrackPrivate)
     {