diff --git a/kernel/kernel-api/src/test/scala/io/delta/kernel/internal/metrics/MetricsReportSerializerSuite.scala b/kernel/kernel-api/src/test/scala/io/delta/kernel/internal/metrics/MetricsReportSerializerSuite.scala
index bf673488e7d..ae242d67477 100644
--- a/kernel/kernel-api/src/test/scala/io/delta/kernel/internal/metrics/MetricsReportSerializerSuite.scala
+++ b/kernel/kernel-api/src/test/scala/io/delta/kernel/internal/metrics/MetricsReportSerializerSuite.scala
@@ -34,7 +34,7 @@ class MetricsReportSerializerSuite extends AnyFunSuite {
     }
   }
 
-  def testSnapshotReport(snapshotReport: SnapshotReport): Unit = {
+  private def testSnapshotReport(snapshotReport: SnapshotReport): Unit = {
     val timestampToVersionResolutionDuration = optionToString(
       snapshotReport.getSnapshotMetrics().getTimestampToVersionResolutionDuration())
     val loadProtocolAndMetadataDuration =