diff --git a/library/src/main/java/com/google/android/exoplayer2/drm/DrmSession.java b/library/src/main/java/com/google/android/exoplayer2/drm/DrmSession.java
index 4d64187a8b..df9b1fffa0 100644
--- a/library/src/main/java/com/google/android/exoplayer2/drm/DrmSession.java
+++ b/library/src/main/java/com/google/android/exoplayer2/drm/DrmSession.java
@@ -31,7 +31,7 @@ public interface DrmSession<T extends ExoMediaCrypto> {
   /** Wraps the exception which is the cause of the error state. */
   class DrmSessionException extends Exception {
 
-    DrmSessionException(Exception e) {
+    public DrmSessionException(Exception e) {
       super(e);
     }