diff --git a/include/transport/buddy.h b/include/transport/buddy.h
index fd72891546dc278ef5226a6feacc1d682aeab6aa..c52f30fc4953825848b4b95ecf74861c3124c331 100644
--- a/include/transport/buddy.h
+++ b/include/transport/buddy.h
@@ -39,7 +39,7 @@ typedef enum { 	BUDDY_NO_FLAG = 0,
 class Buddy {
 	public:
 		/// Constructor.
-		Buddy(RosterManager *rosterManager, long id);
+		Buddy(RosterManager *rosterManager, long id = -1);
 
 		/// Destructor
 		virtual ~Buddy();