diff --git a/library/core/src/main/java/com/google/android/exoplayer2/analytics/MediaMetricsListener.java b/library/core/src/main/java/com/google/android/exoplayer2/analytics/MediaMetricsListener.java
index d6c251a1ad..e42a751a34 100644
--- a/library/core/src/main/java/com/google/android/exoplayer2/analytics/MediaMetricsListener.java
+++ b/library/core/src/main/java/com/google/android/exoplayer2/analytics/MediaMetricsListener.java
@@ -16,7 +16,6 @@
 package com.google.android.exoplayer2.analytics;
 
 import static com.google.android.exoplayer2.util.Assertions.checkNotNull;
-import static com.google.android.exoplayer2.util.Assertions.checkState;
 import static com.google.android.exoplayer2.util.Util.castNonNull;
 
 import android.annotation.SuppressLint;
@@ -172,7 +171,7 @@ public final class MediaMetricsListener
       // Ignore ad sessions.
       return;
     }
-    checkState(activeSessionId == null);
+    finishCurrentSession();
     activeSessionId = sessionId;
     metricsBuilder =
         new PlaybackMetrics.Builder()