diff --git a/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/EditedMediaItem.java b/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/EditedMediaItem.java
index 0fa1c70ef6..0025b6c94f 100644
--- a/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/EditedMediaItem.java
+++ b/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/EditedMediaItem.java
@@ -101,8 +101,8 @@ public final class EditedMediaItem {
      * {@link Mp4Extractor} used. Otherwise, the slow motion metadata will be ignored and the input
      * won't be flattened.
      *
-     * <p>Slow motion flattening is only supported when the {@link Composition} contains one {@link
-     * MediaItem}.
+     * <p>Slow motion flattening is only supported when the {@link Composition} contains exactly one
+     * {@link MediaItem}.
      *
      * <p>Using slow motion flattening together with {@link MediaItem.ClippingConfiguration} is not
      * supported yet.