diff --git a/src/config.cpp b/src/config.cpp
index 2102ad88..380c0b56 100644
--- a/src/config.cpp
+++ b/src/config.cpp
@@ -108,6 +108,7 @@ Config::Config()
   fsname(),
   func(),
   fuse_msg_size("1M"),
+  gid(fuse_cfg.gid,-1),
   gid_cache_expire_timeout(60 * 60),
   gid_cache_remove_timeout(60 * 60 * 12),
   ignorepponrename(false),