diff --git a/src/fuse_open.cpp b/src/fuse_open.cpp
index 260ab0cb..51a72d8c 100644
--- a/src/fuse_open.cpp
+++ b/src/fuse_open.cpp
@@ -233,7 +233,7 @@ namespace l
     fi = reinterpret_cast<FileInfo*>(ffi_->fh);
 
     foo.visit(fi->fusepath,
-              [&](const auto &backing_id_)
+              [&](const std::pair<std::string,int> &backing_id_)
               {
                 backing_id = backing_id_;
               });