diff --git a/mkbootimg/tar.c b/mkbootimg/tar.c
index dc17e00..ed9d38d 100644
--- a/mkbootimg/tar.c
+++ b/mkbootimg/tar.c
@@ -49,8 +49,8 @@ void tar_add(struct stat *st, char *name, unsigned char *content, int size)
     memset(end, 0, 512);
     strncpy((char*)end, name, 99);
     sprintf((char*)end + 100, "%07o", st->st_mode & 077777);
-    sprintf((char*)end + 108, "%07o", 0);
-    sprintf((char*)end + 116, "%07o", 0);
+    sprintf((char*)end + 108, "%07o", st->st_uid);
+    sprintf((char*)end + 116, "%07o", st->st_gid);
     sprintf((char*)end + 124, "%011o", size);
     sprintf((char*)end + 136, "%011o", 0);
     sprintf((char*)end + 148, "%06o", 0);