diff --git a/library/common/src/main/java/com/google/android/exoplayer2/util/GlProgram.java b/library/common/src/main/java/com/google/android/exoplayer2/util/GlProgram.java
index 2019e894d9..783dbd1a69 100644
--- a/library/common/src/main/java/com/google/android/exoplayer2/util/GlProgram.java
+++ b/library/common/src/main/java/com/google/android/exoplayer2/util/GlProgram.java
@@ -66,7 +66,7 @@ public final class GlProgram {
    * @return The content of the file to load.
    * @throws IOException If the file couldn't be read.
    */
-  public static String loadAsset(Context context, String assetPath) throws IOException {
+  private static String loadAsset(Context context, String assetPath) throws IOException {
     @Nullable InputStream inputStream = null;
     try {
       inputStream = context.getAssets().open(assetPath);