diff --git a/client/d4.c b/client/d4.c
index 6017298..fca2e00 100644
--- a/client/d4.c
+++ b/client/d4.c
@@ -26,7 +26,7 @@ void  d4_update_uuid(d4_t* d4)
 
     if (d4->conf[UUID][0] == 0){
         uuid_generate(uuid);
-        memcpy(&(d4->header.uuid), uuid, SZUUID);
+        memcpy(d4->conf[UUID], uuid, SZUUID);
         filename = calloc(1,2*FILENAME_MAX);
         uuid_text = calloc(1, SZUUID_TEXT);
         if ((filename != NULL) && (uuid != NULL)) {