diff --git a/media/java/android/media/AudioAttributes.java b/media/java/android/media/AudioAttributes.java
index 65d3ffc..ac5a9f8 100644
--- a/media/java/android/media/AudioAttributes.java
+++ b/media/java/android/media/AudioAttributes.java
@@ -670,7 +670,7 @@
                     mUsage = usage;
                     break;
                 default:
-                    mUsage = USAGE_UNKNOWN;
+                    throw new IllegalArgumentException("Invalid usage " + usage);
             }
             return this;
         }
@@ -696,7 +696,7 @@
                     mContentType = contentType;
                     break;
                 default:
-                    mContentType = CONTENT_TYPE_UNKNOWN;
+                    throw new IllegalArgumentException("Invalid content type " + contentType);
             }
             return this;
         }