diff --git a/action_processor.h b/action_processor.h
index fc42a24..9bc4ef2 100644
--- a/action_processor.h
+++ b/action_processor.h
@@ -37,6 +37,7 @@
   kActionCodeDownloadSizeMismatchError = 11,
   kActionCodeDownloadPayloadVerificationError = 12,
   kActionCodeDownloadAppliedUpdateVerificationError = 13,
+  kActionCodeDownloadWriteError = 14,
 };
 
 class AbstractAction;