diff --git a/unitree_sdk2py/__init__.py b/unitree_sdk2py/__init__.py
index f071aeb..a951f2d 100644
--- a/unitree_sdk2py/__init__.py
+++ b/unitree_sdk2py/__init__.py
@@ -1,4 +1,4 @@
-from . import idl, utils, core, rpc, go2, b2
+from . import idl, utils, core, rpc, go2
 
 __all__ = [
     "idl"
@@ -6,5 +6,4 @@ __all__ = [
     "core",
     "rpc",
     "go2",
-    "b2",
 ]