1 files changed, 5 insertions, 8 deletions

diff --git a/ot_sync.c b/ot_sync.c
index f958a20..f656bef 100644
--- a/ot_sync.c
+++ b/ot_sync.c
@@ -11,6 +11,7 @@
 #include <sys/uio.h>
 
 /* Opentracker */
+#include "ot_fmt.h"
 #include "ot_iovec.h"
 #include "ot_mutex.h"
 #include "ot_scan.h"
@@ -109,14 +110,10 @@ static void sync_make(size_t *iovec_entries, struct iovec **iovector) {
         re = r + OT_SYNC_CHUNK_SIZE;
       }
 
-      *r++ = '2';
-      *r++ = '0';
-      *r++ = ':';
-      memmove(r, hash, sizeof(ot_hash));
-      r += sizeof(ot_hash);
-      r += sprintf(r, "%zd:", byte_count);
-      memmove(r, peer_list->changeset.data, byte_count);
-      r += byte_count;
+      fmt_append(&r, re, "20:");
+      fmt_bytes(&r, re, hash, sizeof(ot_hash));
+      fmt_append(&r, re, "%zd:", byte_count);
+      fmt_bytes(&r, re, peer_list->changeset.data, byte_count);
     }
 
     /* All torrents done: release lock on currenct bucket */