diff --git a/src/nzg_iface.h b/src/nzg_iface.h
index 68e5aca..50efc8c 100644
--- a/src/nzg_iface.h
+++ b/src/nzg_iface.h
@@ -54,6 +54,8 @@ typedef struct MsgSpace {
 } msgSpace;
 
 
+/* struct msgSpaceListElem * next; */
+
 typedef struct MsgSpaceListElem {
 //  void * id;
   int ownerPid;