diff --git a/random_size.py b/random_size.py
index 90f6733..393d62d 100644
--- a/random_size.py
+++ b/random_size.py
@@ -8,10 +8,9 @@ def read_config(item):
 
 class RandomSize:
     CATEGORY = "utils"
-    def INPUT_TYPES(cls):
-        return {
-            "required": {},
-        }
+    @classmethod    
+    def INPUT_TYPES(s):
+        return { "required":{} }
     RETURN_TYPES = ("INT","INT")
     RETURN_NAMES = ("width","height")
     FUNCTION = "func"