diff --git a/service/ldap.proto b/service/ldap.proto
index 19fe563..d8f690f 100644
--- a/service/ldap.proto
+++ b/service/ldap.proto
@@ -128,7 +128,7 @@ message LdapGroup {
     int64 status = 6;
     int64 sort = 7;
 
-    google.bytes metadata = 101;
+    bytes metadata = 101;
     string ctime = 102;
     string utime = 103;
 }