diff --git a/drm/1.1/ICryptoFactory.hal b/drm/1.1/ICryptoFactory.hal
index a1a7480..1f8caa5 100644
--- a/drm/1.1/ICryptoFactory.hal
+++ b/drm/1.1/ICryptoFactory.hal
@@ -23,11 +23,11 @@
  * crypto HAL to create crypto plugins. Crypto plugins create crypto sessions
  * which are used by a codec to decrypt protected video content.
  *
- * The 1.1 factory must always create 1.1 ICryptoPlugin interfaces, which are
+ * The 1.1 factory must always create 1.0 ICryptoPlugin interfaces, which are
  * returned via the 1.0 createPlugin method.
  *
- * To use 1.1 features the caller must cast the returned interface to a
- * 1.1 HAL, using V1_1::ICryptoPlugin::castFrom().
+ * The ICryptoFactory hal is required because all top-level interfaces
+ * have to be updated in a minor uprev.
  */
 interface ICryptoFactory extends @1.0::ICryptoFactory {
 };