diff --git a/library/src/main/java/com/google/android/exoplayer2/source/TrackGroup.java b/library/src/main/java/com/google/android/exoplayer2/source/TrackGroup.java
index 5001b7e5ca..29051e55cc 100644
--- a/library/src/main/java/com/google/android/exoplayer2/source/TrackGroup.java
+++ b/library/src/main/java/com/google/android/exoplayer2/source/TrackGroup.java
@@ -67,7 +67,7 @@ public final class TrackGroup {
    */
   public int indexOf(Format format) {
     for (int i = 0; i < formats.length; i++) {
-      if (formats[i].equals(format)) {
+      if (format == formats[i]) {
         return i;
       }
     }
diff --git a/library/src/main/java/com/google/android/exoplayer2/source/TrackGroupArray.java b/library/src/main/java/com/google/android/exoplayer2/source/TrackGroupArray.java
index 20de9512f2..be7a53507f 100644
--- a/library/src/main/java/com/google/android/exoplayer2/source/TrackGroupArray.java
+++ b/library/src/main/java/com/google/android/exoplayer2/source/TrackGroupArray.java
@@ -58,7 +58,7 @@ public final class TrackGroupArray {
    */
   public int indexOf(TrackGroup group) {
     for (int i = 0; i < length; i++) {
-      if (trackGroups[i].equals(group)) {
+      if (trackGroups[i] == group) {
         return i;
       }
     }
diff --git a/library/src/main/java/com/google/android/exoplayer2/trackselection/BaseTrackSelection.java b/library/src/main/java/com/google/android/exoplayer2/trackselection/BaseTrackSelection.java
index 5cc978f3b9..60ddb983d9 100644
--- a/library/src/main/java/com/google/android/exoplayer2/trackselection/BaseTrackSelection.java
+++ b/library/src/main/java/com/google/android/exoplayer2/trackselection/BaseTrackSelection.java
@@ -100,7 +100,7 @@ public abstract class BaseTrackSelection implements TrackSelection {
   @Override
   public final int indexOf(Format format) {
     for (int i = 0; i < length; i++) {
-      if (formats[i].equals(format)) {
+      if (formats[i] == format) {
         return i;
       }
     }