diff --git a/api/video_codecs/vp8_frame_buffer_controller.h b/api/video_codecs/vp8_frame_buffer_controller.h
index c506fa4ca5..f3d2b1a6ce 100644
--- a/api/video_codecs/vp8_frame_buffer_controller.h
+++ b/api/video_codecs/vp8_frame_buffer_controller.h
@@ -140,7 +140,7 @@ class Vp8FrameBufferController {
 
   // Called when a loss notification is received.
   virtual void OnLossNotification(
-      const VideoEncoder::LossNotification loss_notification) = 0;
+      const VideoEncoder::LossNotification& loss_notification) = 0;
 };
 
 // Interface for a factory of Vp8FrameBufferController instances.
diff --git a/api/video_codecs/vp8_temporal_layers.cc b/api/video_codecs/vp8_temporal_layers.cc
index 004b10fb84..7a9cf37b6c 100644
--- a/api/video_codecs/vp8_temporal_layers.cc
+++ b/api/video_codecs/vp8_temporal_layers.cc
@@ -89,7 +89,7 @@ void Vp8TemporalLayers::OnRttUpdate(int64_t rtt_ms) {
 }
 
 void Vp8TemporalLayers::OnLossNotification(
-    const VideoEncoder::LossNotification loss_notification) {
+    const VideoEncoder::LossNotification& loss_notification) {
   for (auto& controller : controllers_) {
     controller->OnLossNotification(loss_notification);
   }
diff --git a/api/video_codecs/vp8_temporal_layers.h b/api/video_codecs/vp8_temporal_layers.h
index dcf04c618b..f02d288f1c 100644
--- a/api/video_codecs/vp8_temporal_layers.h
+++ b/api/video_codecs/vp8_temporal_layers.h
@@ -62,7 +62,7 @@ class Vp8TemporalLayers final : public Vp8FrameBufferController {
   void OnRttUpdate(int64_t rtt_ms) override;
 
   void OnLossNotification(
-      const VideoEncoder::LossNotification loss_notification) override;
+      const VideoEncoder::LossNotification& loss_notification) override;
 
  private:
   std::vector<std::unique_ptr<Vp8FrameBufferController>> controllers_;
diff --git a/modules/video_coding/codecs/vp8/default_temporal_layers.cc b/modules/video_coding/codecs/vp8/default_temporal_layers.cc
index 22b3718794..31298fe7af 100644
--- a/modules/video_coding/codecs/vp8/default_temporal_layers.cc
+++ b/modules/video_coding/codecs/vp8/default_temporal_layers.cc
@@ -552,7 +552,7 @@ void DefaultTemporalLayers::OnPacketLossRateUpdate(float packet_loss_rate) {}
 void DefaultTemporalLayers::OnRttUpdate(int64_t rtt_ms) {}
 
 void DefaultTemporalLayers::OnLossNotification(
-    const VideoEncoder::LossNotification loss_notification) {}
+    const VideoEncoder::LossNotification& loss_notification) {}
 
 TemplateStructure DefaultTemporalLayers::GetTemplateStructure(
     int num_layers) const {
diff --git a/modules/video_coding/codecs/vp8/default_temporal_layers.h b/modules/video_coding/codecs/vp8/default_temporal_layers.h
index 67839f6c94..7a47650921 100644
--- a/modules/video_coding/codecs/vp8/default_temporal_layers.h
+++ b/modules/video_coding/codecs/vp8/default_temporal_layers.h
@@ -64,7 +64,7 @@ class DefaultTemporalLayers final : public Vp8FrameBufferController {
   void OnRttUpdate(int64_t rtt_ms) override;
 
   void OnLossNotification(
-      const VideoEncoder::LossNotification loss_notification) override;
+      const VideoEncoder::LossNotification& loss_notification) override;
 
  private:
   struct DependencyInfo {
diff --git a/modules/video_coding/codecs/vp8/screenshare_layers.cc b/modules/video_coding/codecs/vp8/screenshare_layers.cc
index 65a445e50b..85fb6d7264 100644
--- a/modules/video_coding/codecs/vp8/screenshare_layers.cc
+++ b/modules/video_coding/codecs/vp8/screenshare_layers.cc
@@ -394,7 +394,7 @@ void ScreenshareLayers::OnPacketLossRateUpdate(float packet_loss_rate) {}
 void ScreenshareLayers::OnRttUpdate(int64_t rtt_ms) {}
 
 void ScreenshareLayers::OnLossNotification(
-    const VideoEncoder::LossNotification loss_notification) {}
+    const VideoEncoder::LossNotification& loss_notification) {}
 
 TemplateStructure ScreenshareLayers::GetTemplateStructure(
     int num_layers) const {
diff --git a/modules/video_coding/codecs/vp8/screenshare_layers.h b/modules/video_coding/codecs/vp8/screenshare_layers.h
index 69a1737e47..c7bc5f46f8 100644
--- a/modules/video_coding/codecs/vp8/screenshare_layers.h
+++ b/modules/video_coding/codecs/vp8/screenshare_layers.h
@@ -68,7 +68,7 @@ class ScreenshareLayers final : public Vp8FrameBufferController {
   void OnRttUpdate(int64_t rtt_ms) override;
 
   void OnLossNotification(
-      const VideoEncoder::LossNotification loss_notification) override;
+      const VideoEncoder::LossNotification& loss_notification) override;
 
  private:
   enum class TemporalLayerState : int { kDrop, kTl0, kTl1, kTl1Sync };