diff --git a/ndn-cpp/c/errors.c b/ndn-cpp/c/errors.c
index 5cb69f7..58b7766 100644
--- a/ndn-cpp/c/errors.c
+++ b/ndn-cpp/c/errors.c
@@ -44,6 +44,8 @@
     return      "DynamicUCharArray realloc function pointer not supplied";
   case NDN_ERROR_DynamicUCharArray_realloc_failed:
     return      "DynamicUCharArray realloc failed";
+  case NDN_ERROR_unrecognized_ndn_ExcludeType:
+    return      "unrecognized ndn_ExcludeType";
   default:
     return "unrecognized ndn_Error code";  
   }