diff --git a/libwvdrmengine/cdm/include/cdm_identifier.h b/libwvdrmengine/cdm/include/cdm_identifier.h
index ecccdec7..5d7a52dc 100644
--- a/libwvdrmengine/cdm/include/cdm_identifier.h
+++ b/libwvdrmengine/cdm/include/cdm_identifier.h
@@ -47,7 +47,7 @@ struct CdmIdentifier {
   // to the default cdm. E.g. no spoid, origin or app package name. Use this
   // comparison in lieu of the == operator when checking to see if the
   // identifier would cause the default provisioned certificate to be used.
-  bool IsEquivalentToDefault() {
+  bool IsEquivalentToDefault() const {
     return spoid == EMPTY_SPOID && origin == EMPTY_ORIGIN &&
            app_package_name == EMPTY_APP_PACKAGE_NAME;
   }
diff --git a/libwvdrmengine/cdm/src/wv_content_decryption_module.cpp b/libwvdrmengine/cdm/src/wv_content_decryption_module.cpp
index 9ce0108f..b10d8a63 100644
--- a/libwvdrmengine/cdm/src/wv_content_decryption_module.cpp
+++ b/libwvdrmengine/cdm/src/wv_content_decryption_module.cpp
@@ -565,6 +565,10 @@ CdmResponseType WvContentDecryptionModule::GetCurrentMetricsInternal(
 void WvContentDecryptionModule::SaveMetrics(
     const CdmIdentifier& identifier, drm_metrics::WvCdmMetrics&& metrics) {
   if (saved_metrics_snapshots_ == nullptr) return;
+  // The DRM plugin opens and closes many CDMs using the default
+  // identifier.  These metrics are not needed when checking the
+  // metric history.
+  if (identifier.IsEquivalentToDefault()) return;
   saved_metrics_snapshots_->PushMetrics(
       WvMetricsSnapshot::MakeSnapshot(identifier, std::move(metrics)));
 }