diff --git a/src/or/routerlist.c b/src/or/routerlist.c
index f2d8b438f6..f7caaa024b 100644
--- a/src/or/routerlist.c
+++ b/src/or/routerlist.c
@@ -3799,7 +3799,7 @@ add_trusted_dir_server(const char *nickname, const char *address,
   ent->is_running = 1;
   ent->type = type;
   memcpy(ent->digest, digest, DIGEST_LEN);
-  if (v3_auth_digest)
+  if (v3_auth_digest && (type & V3_AUTHORITY))
     memcpy(ent->v3_identity_digest, v3_auth_digest, DIGEST_LEN);
 
   dlen = 64 + strlen(hostname) + (nickname?strlen(nickname):0);