diff --git a/bhl.inc.php b/bhl.inc.php
index 6cb997a..868da20 100644
--- a/bhl.inc.php
+++ b/bhl.inc.php
@@ -12,11 +12,10 @@ task('bhl_clean_cache', function()
   bhl_clean_cache();
 });
 
-function bhl_build_dll()
+function bhl_build_dll($mcs_bin)
 {
   global $GAME_ROOT;
 
-  $mcs_bin = mono_mcs_bin();
   $dll_file = "$GAME_ROOT/unity/Assets/Plugins/game_bhl.dll";
 
   bhl_shell_ensure("build_back_dll $mcs_bin $dll_file " . (is_dev() ? '-debug' : ''));