diff --git a/vendored/libfuse/include/fuse_lowlevel.h b/vendored/libfuse/include/fuse_lowlevel.h
index f74f5050..00ed1ee7 100644
--- a/vendored/libfuse/include/fuse_lowlevel.h
+++ b/vendored/libfuse/include/fuse_lowlevel.h
@@ -102,7 +102,7 @@ struct fuse_lowlevel_ops
   void (*bmap)(fuse_req_t *req, const struct fuse_in_header *hdr);
   void (*copy_file_range)(fuse_req_t *req, const struct fuse_in_header *hdr);
   void (*create)(fuse_req_t *req, struct fuse_in_header *hdr);
-  void (*destroy)(void *userdata);
+  void (*destroy)();
   void (*fallocate)(fuse_req_t *req, const struct fuse_in_header *hdr);
   void (*flock)(fuse_req_t *req, uint64_t ino, fuse_file_info_t *fi, int op);
   void (*flush)(fuse_req_t *req, struct fuse_in_header *hdr);
@@ -113,7 +113,7 @@ struct fuse_lowlevel_ops
   void (*getattr)(fuse_req_t *req, struct fuse_in_header *hdr);
   void (*getlk)(fuse_req_t *req, const struct fuse_in_header *hdr);
   void (*getxattr)(fuse_req_t *req, struct fuse_in_header *hdr);
-  void (*init)(void *userdata, fuse_conn_info_t *conn);
+  void (*init)(fuse_conn_info_t *conn);
   void (*ioctl)(fuse_req_t *req, const struct fuse_in_header *hdr);
   void (*link)(fuse_req_t *req, struct fuse_in_header *hdr);
   void (*listxattr)(fuse_req_t *req, struct fuse_in_header *hdr);