diff --git a/nlsr-sync-0.0/nlsr_sync.h b/nlsr-sync-0.0/nlsr_sync.h
index ef9d342..68fc767 100644
--- a/nlsr-sync-0.0/nlsr_sync.h
+++ b/nlsr-sync-0.0/nlsr_sync.h
@@ -2,7 +2,7 @@
 #define _NLSR_SYNC_H_
 
 void sync_monitor(char *topo_prefix, char *slice_prefix);
-void write_data_to_repo(char *data,char *name_prefix);
+int write_data_to_repo(char *data,char *name_prefix);
 int create_sync_slice(char *topo_prefix, char *slice_prefix);
 void get_host_name_from_command_string(struct name_prefix *name_part,char *nbr_name_uri, int offset);
 void process_content_from_sync(struct ccn_charbuf *content_name, struct ccn_indexbuf *components);