diff --git a/src/fuse_open.cpp b/src/fuse_open.cpp
index ffeea4af..d4968d5f 100644
--- a/src/fuse_open.cpp
+++ b/src/fuse_open.cpp
@@ -323,6 +323,7 @@ _open_for_update_lambda(const fuse_context *fc_,
                     ffi_,
                     false, // link_cow, need to always open the original
                     cfg->nfsopenhack);
+  fmt::print("open update {}\n",rv);
   if(rv < 0)
     return rv;