diff --git a/gtab.h b/gtab.h
index 9245f22..c8c99c7 100644
--- a/gtab.h
+++ b/gtab.h
@@ -116,6 +116,7 @@ enum {
   method_type_INT_CODE=10,
   method_type_MODULE=12,
   method_type_SYMBOL_TABLE=13,
+  method_type_CHEWING=16, 
 };
 
 extern INMD inmd[MAX_GTAB_NUM_KEY+1];