diff --git a/library/common/src/main/java/com/google/android/exoplayer2/SimpleBasePlayer.java b/library/common/src/main/java/com/google/android/exoplayer2/SimpleBasePlayer.java
index a962b8220b..aa904e591c 100644
--- a/library/common/src/main/java/com/google/android/exoplayer2/SimpleBasePlayer.java
+++ b/library/common/src/main/java/com/google/android/exoplayer2/SimpleBasePlayer.java
@@ -32,6 +32,8 @@ import androidx.annotation.FloatRange;
 import androidx.annotation.IntRange;
 import androidx.annotation.Nullable;
 import com.google.android.exoplayer2.audio.AudioAttributes;
+import com.google.android.exoplayer2.metadata.Metadata;
+import com.google.android.exoplayer2.source.ads.AdPlaybackState;
 import com.google.android.exoplayer2.text.CueGroup;
 import com.google.android.exoplayer2.trackselection.TrackSelectionParameters;
 import com.google.android.exoplayer2.util.Clock;