Index: common/Message.h
===================================================================
--- common/Message.h	(revision e4c60ba35ab71c7d35960b98212214ce43dd724c)
+++ common/Message.h	(revision e3308731b41a069afa9a7abba6aa611851f82db2)
@@ -10,5 +10,6 @@
 #define MSG_TYPE_OBJECT        7
 #define MSG_TYPE_REMOVE_OBJECT 8
-#define MSG_TYPE_DROP_FLAG     9
+#define MSG_TYPE_PICKUP_FLAG   9
+#define MSG_TYPE_DROP_FLAG     10
 
 typedef struct