diff --git a/unity.inc.php b/unity.inc.php
index cd3133c..4cbc795 100644
--- a/unity.inc.php
+++ b/unity.inc.php
@@ -5,14 +5,15 @@ use Exception;
 task('unity', function()
 {
   $unity_path = guess_unity_app_dir();
+  $proj_path = normalize_path(get("UNITY_ASSETS_DIR") . '/../');
   if(is_win())
   {
     $unity_app_path = "'$unity_path/Editor/Unity.exe'";
-    run_background_proc($unity_app_path, ['-projectPath', '.']);
+    run_background_proc($unity_app_path, ['-projectPath', $proj_path]);
   }
   else
   {
-    $cmd = guess_unity_app_dir()."'Unity.app/Contents/MacOS/Unity' -projectPath . > /dev/null 2>&1&";
+    $cmd = guess_unity_app_dir()."'Unity.app/Contents/MacOS/Unity' -projectPath $proj_path > /dev/null 2>&1&";
     system($cmd, $res);
   }
 });