diff --git a/src/option_parser.cpp b/src/option_parser.cpp
index 671fefa5..02e0f1f3 100644
--- a/src/option_parser.cpp
+++ b/src/option_parser.cpp
@@ -349,7 +349,7 @@ namespace options
     if(cfg.mountpoint->empty())
       cfg.errs.push_back({EINVAL,"mountpoint not set"});
     else
-      fuse_opt_add_arg(args_,cfg.mountpoint.string().c_str());
+      fuse_opt_add_arg(args_,cfg.mountpoint.to_string().c_str());
 
     ::_postprocess_and_print_warnings();
     ::_check_for_mount_loop();