diff --git a/library/core/src/main/java/com/google/android/exoplayer2/drm/DrmSession.java b/library/core/src/main/java/com/google/android/exoplayer2/drm/DrmSession.java
index 538db9e1d9..cd694396b7 100644
--- a/library/core/src/main/java/com/google/android/exoplayer2/drm/DrmSession.java
+++ b/library/core/src/main/java/com/google/android/exoplayer2/drm/DrmSession.java
@@ -28,11 +28,11 @@ import java.util.Map;
 @TargetApi(16)
 public interface DrmSession<T extends ExoMediaCrypto> {
 
-  /** Wraps the exception which is the cause of the error state. */
+  /** Wraps the throwable which is the cause of the error state. */
   class DrmSessionException extends Exception {
 
-    public DrmSessionException(Exception e) {
-      super(e);
+    public DrmSessionException(Throwable cause) {
+      super(cause);
     }
 
   }