diff --git a/api/test/mock_rtpsender.h b/api/test/mock_rtpsender.h
index e4d6399eed..e36eec4618 100644
--- a/api/test/mock_rtpsender.h
+++ b/api/test/mock_rtpsender.h
@@ -19,8 +19,12 @@
 
 namespace webrtc {
 
-class MockRtpSender : public rtc::RefCountedObject<RtpSenderInterface> {
+class MockRtpSender : public RtpSenderInterface {
  public:
+  static rtc::scoped_refptr<MockRtpSender> Create() {
+    return rtc::make_ref_counted<MockRtpSender>();
+  }
+
   MOCK_METHOD(bool, SetTrack, (MediaStreamTrackInterface*), (override));
   MOCK_METHOD(rtc::scoped_refptr<MediaStreamTrackInterface>,
               track,
@@ -42,6 +46,7 @@ class MockRtpSender : public rtc::RefCountedObject<RtpSenderInterface> {
               (const, override));
 };
 
+static_assert(!std::is_abstract_v<rtc::RefCountedObject<MockRtpSender>>, "");
 }  // namespace webrtc
 
 #endif  // API_TEST_MOCK_RTPSENDER_H_