diff --git a/modules/io/src/mol/chemdict_parser.hh b/modules/io/src/mol/chemdict_parser.hh
index 51142744c37de1e419f39395db04edc926801982..51bc241fd1c7ee1e89f91c082bcf927bbd8a40b7 100644
--- a/modules/io/src/mol/chemdict_parser.hh
+++ b/modules/io/src/mol/chemdict_parser.hh
@@ -34,6 +34,7 @@ namespace ost { namespace io {
 typedef enum {
   ATOM_SPEC,
   BOND_SPEC,
+  DESC_SPEC,
   DONT_KNOW
 } LoopType;