diff --git a/pkgs/applications/misc/sunwait/default.nix b/pkgs/applications/misc/sunwait/default.nix
index c9581fe79f6..2d1f8f46f5a 100644
--- a/pkgs/applications/misc/sunwait/default.nix
+++ b/pkgs/applications/misc/sunwait/default.nix
@@ -11,6 +11,8 @@ stdenv.mkDerivation {
     sha256 = "0cs8rdcnzsl10zia2k49a6c2z6gvp5rnf31sgn3hn5c7kgy7l3ax";
   };
 
+  makeFlags = [ "C=${stdenv.cc.targetPrefix}c++" ];
+
   installPhase = ''
     install -Dm755 sunwait -t $out/bin
   '';