--- a/src/sync.c	Tue Jun 13 16:05:57 2006 +0200
+++ b/src/sync.c	Fri Jun 16 14:24:59 2006 +0200
@@ -32,6 +32,7 @@
 UNS32 OnCOB_ID_SyncUpdate(CO_Data* d, const indextable * unsused_indextable, UNS8 unsused_bSubindex)
 {
 	startSYNC(d);
+	return 0;
 }
 
 void startSYNC(CO_Data* d)