diff --git a/src/fuse_open.cpp b/src/fuse_open.cpp
index 0bfae741..00c4bcdd 100644
--- a/src/fuse_open.cpp
+++ b/src/fuse_open.cpp
@@ -311,7 +311,7 @@ namespace FUSE
       case _(PassthroughEnum::rw,O_WRONLY):
       case _(PassthroughEnum::rw,O_RDWR):
         rv = l::passthrough(fc,ffi_);
-        cfg->passthrough = PassthroughEnum::off;
+        Config::Write()->passthrough = PassthroughEnum::off;
         break;
       }