diff --git a/src/fuse_open.cpp b/src/fuse_open.cpp
index 8db68c8c..8ea7d608 100644
--- a/src/fuse_open.cpp
+++ b/src/fuse_open.cpp
@@ -233,9 +233,9 @@ namespace l
     fi = reinterpret_cast<FileInfo*>(ffi_->fh);
 
     foo.visit(fi->fusepath,
-              [](int backing_id_)
+              [&](int backing_id_)
               {
-                
+                backing_id = backing_id_;
               });
     
     backing_id = fuse_passthrough_open(fc_,fi->fd);