diff --git a/dosei_sdk/main.py b/dosei_sdk/main.py
index 3f60c61..fc390eb 100644
--- a/dosei_sdk/main.py
+++ b/dosei_sdk/main.py
@@ -10,7 +10,7 @@
 sys.path.insert(0, "")
 
 
-def run(func):
+def run(func=None):
     if func:
         return Dosei.call_func(import_from_string(func))
     try: