diff --git a/src/dmbcs-market-data-api.h b/src/dmbcs-market-data-api.h
index d52d7c8..508cefb 100644
--- a/src/dmbcs-market-data-api.h
+++ b/src/dmbcs-market-data-api.h
@@ -98,7 +98,7 @@ namespace DMBCS  {  namespace  Market_Data_Api
       /** Has the company recently entered the market, or left it?  Or
        *  perhaps this is a sideways movement: change of name, symbol
        *  and/or market of a market component already being tracked. */
-      enum {ADD, REMOVE, SIDEWAYS}  action;
+      enum {ADD, REMOVE, SIDEWAYS}  action  {ADD};
     };
 
     /** Get a list of market changes since \a last_time. */