diff --git a/worlds/AutoWorld.py b/worlds/AutoWorld.py
index 19ec9a14a8..067bf30403 100644
--- a/worlds/AutoWorld.py
+++ b/worlds/AutoWorld.py
@@ -107,6 +107,11 @@ class AutoLogicRegister(type):
             elif not item_name.startswith("__"):
                 if hasattr(CollectionState, item_name):
                     raise Exception(f"Name conflict on Logic Mixin {name} trying to overwrite {item_name}")
+
+                assert callable(function) or "init_mixin" in dct, (
+                    f"{name} defined class variable {item_name} without also having init_mixin."
+                )
+
                 setattr(CollectionState, item_name, function)
         return new_class