diff --git a/oml/oxtornado.py b/oml/oxtornado.py
index db15793..322c6a8 100644
--- a/oml/oxtornado.py
+++ b/oml/oxtornado.py
@@ -38,13 +38,13 @@ def json_dumps(obj):
     return json.dumps(obj, indent=indent, default=_to_json, ensure_ascii=False).encode()
 
 def run_async(func):
-  @wraps(func)
-  def async_func(*args, **kwargs):
-    func_hl = Thread(target = func, args = args, kwargs = kwargs)
-    func_hl.start()
-    return func_hl
+    @wraps(func)
+    def async_func(*args, **kwargs):
+        func_hl = Thread(target=func, args=args, kwargs=kwargs)
+        func_hl.start()
+        return func_hl
 
-  return async_func
+    return async_func
 
 def trim(docstring):
     if not docstring: