diff --git a/channels/h323/chan_h323.h b/channels/h323/chan_h323.h
index 1ca681c77d..963cbd6de0 100755
--- a/channels/h323/chan_h323.h
+++ b/channels/h323/chan_h323.h
@@ -26,6 +26,8 @@
  * Version Info: $Id$
  */
 
+#define AST_MAX_ACCOUNTCODE 20
+
 #include <arpa/inet.h>
 
 /** call_option struct holds various bits