diff --git a/gef.py b/gef.py
index 092257cff..de041e3cc 100644
--- a/gef.py
+++ b/gef.py
@@ -11596,8 +11596,7 @@ def setup(self) -> bool:
         return True
 
     def __setup_qemu_system(self) -> bool:
-        raise Exception("TODO")
-        return True
+        raise NotImplementedError("TODO")
 
     def __setup_qemu_user(self) -> bool:
         self.__local_root_path = pathlib.Path("/")