diff --git a/ndn-cpp/c/errors.h b/ndn-cpp/c/errors.h
index 6cb6f1f..b15413b 100644
--- a/ndn-cpp/c/errors.h
+++ b/ndn-cpp/c/errors.h
@@ -29,7 +29,8 @@
   NDN_ERROR_findElementEnd_unrecognized_header_type,
   NDN_ERROR_findElementEnd_unrecognized_state,
   NDN_ERROR_DynamicUCharArray_realloc_function_pointer_not_supplied,
-  NDN_ERROR_DynamicUCharArray_realloc_failed
+  NDN_ERROR_DynamicUCharArray_realloc_failed,
+  NDN_ERROR_unrecognized_ndn_ExcludeType
 } ndn_Error;
   
 /**