diff --git a/src/eval-args.hh b/src/eval-args.hh
index 84f2ba1..b0932fb 100644
--- a/src/eval-args.hh
+++ b/src/eval-args.hh
@@ -12,7 +12,7 @@
 
 class MyArgs : virtual public nix::MixEvalArgs,
                virtual public nix::MixCommonArgs,
-               virtual nix::RootArgs {
+               virtual public nix::RootArgs {
   public:
     std::string releaseExpr;
     nix::Path gcRootsDir;
diff --git a/src/meson.build b/src/meson.build
index dfbcd87..745e036 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -31,4 +31,4 @@ executable('nix-eval-jobs', src,
              threads_dep
            ],
            install: true,
-           cpp_args: ['-std=c++2a', '-fvisibility=hidden', '--include', 'autotools-config.h'])
+           cpp_args: ['-std=c++2a', '--include', 'autotools-config.h'])