diff --git a/drm/1.0/ICryptoPlugin.hal b/drm/1.0/ICryptoPlugin.hal
index ca8fa50..0a7fd26 100644
--- a/drm/1.0/ICryptoPlugin.hal
+++ b/drm/1.0/ICryptoPlugin.hal
@@ -99,7 +99,8 @@
      * ERROR_DRM_RESOURCE_BUSY if the resources required to perform the
      * decryption are not available, ERROR_DRM_INSUFFICIENT_OUTPUT_PROTECTION
      * if required output protections are not active,
-     * ERROR_DRM_SESSION_NOT_OPENED if the decrypt session is not opened, or
+     * ERROR_DRM_SESSION_NOT_OPENED if the decrypt session is not opened,
+     * ERROR_DRM_DECRYPT if the decrypt operation fails, and
      * ERROR_DRM_CANNOT_HANDLE in other failure cases.
      * @return bytesWritten the number of bytes output from the decryption
      * @return detailedError if the error is a vendor-specific error, the